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Electronic music is music that employs electronic musical instruments, digital instruments and circuitry-based music technology. In general, a distinction can be made between sound produced using electromechanical means (electroacoustic music), and that produced using electronics only.[1] Electromechanical instruments include mechanical elements, such as strings, hammers, and so on, and electric elements, such as magnetic pickups, power amplifiers and loudspeakers. Examples of electromechanical sound producing devices include the telharmonium, Hammond organ, and the electric guitar, which are typically made loud enough for performers and audiences to hear with an instrument amplifier and speaker cabinet. Pure electronic instruments do not have vibrating strings, hammers, or other sound-producing mechanisms. Devices such as the theremin, synthesizer, and computer can produce electronic sounds.[2] The first electronic devices for performing music were developed at the end of the 19th century, and shortly afterward Italian futurists explored sounds that had not been considered musical. During the 1920s and 1930s, electronic instruments were introduced and the first compositions for electronic instruments were made. By the 1940s, magnetic audio tape allowed musicians to tape sounds and then modify them by changing the tape speed or direction, leading to the development of electroacoustic tape music in the 1940s, in Egypt and France. Musique concrète, created in Paris in 1948, was based on editing together recorded fragments of natural and industrial sounds. Music produced solely from electronic generators was first produced in Germany in 1953. Electronic music was also created in Japan and the United States beginning in the 1950s. An important new development was the advent of computers to compose music. Algorithmic composition was first demonstrated in Australia in 1951. In the 1960s, live electronics were pioneered in America and Europe, Japanese electronic musical instruments began influencing the music industry, and Jamaican dub music emerged as a form of popular electronic music. In the early 1970s, the monophonic Minimoog synthesizer and Japanese drum machines helped popularize synthesized electronic music. In the 1970s, electronic music began having a significant influence on popular music, with the adoption of polyphonic synthesizers, electronic drums, drum machines, and turntables, through the emergence of genres such as disco, krautrock, new wave, synth-pop, hip hop and EDM. In the 1980s, electronic music became more dominant in popular music, with a greater reliance on synthesizers, and the adoption of programmable drum machines such as the Roland TR-808 and bass synthesizers such as the TB-303. In the early 1980s, digital technologies for synthesizers including digital synthesizers such as the Yamaha DX7 were popularized, and a group of musicians and music merchants developed the Musical Instrument Digital Interface (MIDI). Electronically produced music became prevalent in the popular domain by the 1990s, because of the advent of affordable music technology.[3] Contemporary electronic music includes many varieties and ranges from experimental art music to popular forms such as electronic dance music. Today, pop electronic music is most recognizable in its 4/4 form and more connected with the mainstream culture as opposed to its preceding forms which were specialized to niche markets.[4] ContentsOrigins: late 19th century to early 20th century
Front page of Scientific American in 1907, demonstrating the size, operation, and popularity of the Telharmonium
At the turn of the 20th century, experimentation with emerging electronics led to the first electronic musical instruments.[5] These initial inventions were not sold, but were instead used in demonstrations and public performances. The audiences were presented with reproductions of existing music instead of new compositions for the instruments.[6][7] While some were considered novelties and produced simple tones, the Telharmonium accurately synthesized the sound of orchestral instruments. It achieved viable public interest and made commercial progress into streaming music through telephone networks.[8] Critics of musical conventions at the time saw promise in these developments. Ferruccio Busoni encouraged the composition of microtonal music allowed for by electronic instruments. He predicted the use of machines in future music, writing the influential Sketch of a New Esthetic of Music.[9][10] Futurists such as Francesco Balilla Pratella and Luigi Russolo began composing music with acoustic noise to evoke the sound of machinery. They predicted expansions in timbre allowed for by electronics in the influential manifesto The Art of Noises.[11][12] Early compositions
Developments of the vacuum tube led to electronic instruments that were smaller, amplified, and more practical for performance.[13] In particular, the theremin, ondes Martenot and trautonium were commercially produced by the early 1930s.[14][15][16] From the late 1920s, the increased practicality of electronic instruments influenced composers such as Joseph Schillinger to adopt them. They were typically used within orchestras, and most composers wrote parts for the theremin that could otherwise be performed with string instruments.[14] Avant-garde composers criticized the predominant use of electronic instruments for conventional purposes.[14] The instruments offered expansions in pitch resources[17] that were exploited by advocates of microtonal music such as Charles Ives, Dimitrios Levidis, Olivier Messiaen and Edgard Varèse.[18][19][20] Further, Percy Grainger used the theremin to abandon fixed tonation entirely,[21] while Russian composers such as Gavriil Popov treated it as a source of noise in otherwise-acoustic noise music.[22] Recording experimentsDevelopments in early recording technology paralleled that of electronic instruments. The first means of recording and reproducing audio was invented in the late 19th century with the mechanical phonograph.[23] Record players became a common household item, and by the 1920s composers were using them to play short recordings in performances.[24] The introduction of electrical recording in 1925 was followed by increased experimentation with record players. Paul Hindemith and Ernst Toch composed several pieces in 1930 by layering recordings of instruments and vocals at adjusted speeds. Influenced by these techniques, John Cage composed Imaginary Landscape No. 1 in 1939 by adjusting the speeds of recorded tones.[25] Concurrently, composers began to experiment with newly developed sound-on-film technology. Recordings could be spliced together to create sound collages, such as those by Tristan Tzara, Kurt Schwitters, Filippo Tommaso Marinetti, Walter Ruttmann and Dziga Vertov. Further, the technology allowed sound to be graphically created and modified. These techniques were used to compose soundtracks for several films in Germany and Russia, in addition to the popular Dr. Jekyll and Mr. Hyde in the United States. Experiments with graphical sound were continued by Norman McLaren from the late 1930s. Development: 1940s to 1950sElectroacoustic tape musicThe first practical audio tape recorder was unveiled in 1935.[26] Improvements to the technology were made using the AC biasing technique, which significantly improved recording fidelity.[27][28] As early as 1942, test recordings were being made in stereo.[29] Although these developments were initially confined to Germany, recorders and tapes were brought to the United States following the end of World War II.[30] These were the basis for the first commercially produced tape recorder in 1948.[31] In 1944, prior to the use of magnetic tape for compositional purposes, Egyptian composer Halim El-Dabh, while still a student in Cairo, used a cumbersome wire recorder to record sounds of an ancient zaar ceremony. Using facilities at the Middle East Radio studios El-Dabh processed the recorded material using reverberation, echo, voltage controls, and re-recording. What resulted is believed to be the earliest tape music composition. [32] The resulting work was entitled The Expression of Zaar and it was presented in 1944 at an art gallery event in Cairo. While his initial experiments in tape-based composition were not widely known outside of Egypt at the time, El-Dabh is also known for his later work in electronic music at the Columbia-Princeton Electronic Music Center in the late 1950s.[33] Musique concrète Phonogene (1953), a tape machine for modifying the sound structure, developed by Pierre Schaeffer et al. at GRMC.
 Pierre Schaeffer presenting the Acousmonium (1974) that was consisted of 80 loudspeakers for tape playback, at GRM.
Following his work with Studio d'Essai at Radiodiffusion Française (RDF), during the early 1940s, Pierre Schaeffer is credited with originating the theory and practice of musique concrète. In the late 1940s, experiments in sound based composition using shellac record players were first conducted by Schaeffer. In 1950, the techniques of musique concrete were expanded when magnetic tape machines were used to explore sound manipulation practices such as speed variation (pitch shift) and tape splicing (Palombini 1993, 14).[34] On 5 October 1948, RDF broadcast Schaeffer's Etude aux chemins de fer. This was the first "movement" of Cinq études de bruits, and marked the beginning of studio realizations[35] and musique concrète (or acousmatic art). Schaeffer employed a disk-cutting lathe, four turntables, a four-channel mixer, filters, an echo chamber, and a mobile recording unit. Not long after this, Pierre Henry began collaborating with Schaeffer, a partnership that would have profound and lasting effects on the direction of electronic music. Another associate of Schaeffer, Edgard Varèse, began work on Déserts, a work for chamber orchestra and tape. The tape parts were created at Pierre Schaeffer's studio, and were later revised at Columbia University. In 1950, Schaeffer gave the first public (non-broadcast) concert of musique concrète at the École Normale de Musique de Paris. "Schaeffer used a PA system, several turntables, and mixers. The performance did not go well, as creating live montages with turntables had never been done before."[36] Later that same year, Pierre Henry collaborated with Schaeffer on Symphonie pour un homme seul (1950) the first major work of musique concrete. In Paris in 1951, in what was to become an important worldwide trend, RTF established the first studio for the production of electronic music. Also in 1951, Schaeffer and Henry produced an opera, Orpheus, for concrete sounds and voices. Elektronische MusikKarlheinz Stockhausen worked briefly in Schaeffer's studio in 1952, and afterward for many years at the WDR Cologne's Studio for Electronic Music. In Cologne, what would become the most famous electronic music studio in the world was officially opened at the radio studios of the NWDR in 1953, though it had been in the planning stages as early as 1950 and early compositions were made and broadcast in 1951.[37] The brain child of Werner Meyer-Eppler, Robert Beyer, and Herbert Eimert (who became its first director), the studio was soon joined by Karlheinz Stockhausen and Gottfried Michael Koenig. In his 1949 thesis Elektronische Klangerzeugung: Elektronische Musik und Synthetische Sprache, Meyer-Eppler conceived the idea to synthesize music entirely from electronically produced signals; in this way, elektronische Musik was sharply differentiated from French musique concrète, which used sounds recorded from acoustical sources.[38] "With Stockhausen and Mauricio Kagel in residence, it became a year-round hive of charismatic avante-gardism [sic]"[39] on two occasions combining electronically generated sounds with relatively conventional orchestras—in Mixtur (1964) and Hymnen, dritte Region mit Orchester (1967).[40] Stockhausen stated that his listeners had told him his electronic music gave them an experience of "outer space", sensations of flying, or being in a "fantastic dream world".[41] More recently, Stockhausen turned to producing electronic music in his own studio in Kürten, his last work in the medium being Cosmic Pulses (2007). Japanese electronic music
The earliest electronic musical instruments in Japan, Yamaha Magna Organ was built in 1935,[42] however after the World War II, Japanese composers such as Minao Shibata were aware of further developments of electronic musical instruments. By the late 1940s, Japanese composers began experimenting with electronic music, and institutional sponsorship enabled them to experiment with cutting-edge equipment. Their infusion of Asian music into the emerging genre would eventually support Japan's domination in the development of music technology several decades later.[43] Following the foundation of electronics company Sony in 1946, composers Toru Takemitsu and Minao Shibata independently conceived possible uses for electronic technology to produce music.[44] Takemitsu had ideas similar to that of musique concrète, which he was initially unaware of, while Shibata foresaw the development of synthesizers and predicted a drastic change in music.[45] Sony began producing popular magnetic tape recorders for government and public use.[43][46] The avant-garde collective Jikken Kobo (Experimental Workshop), founded in 1950, was offered access to emerging audio technology by Sony. The company hired Toru Takemitsu to demonstrate their tape recorders with compositions and performances of electronic tape music.[47] The first electronic tape pieces by the group were "Toraware no Onna" ("Imprisoned Woman") and "Piece B", composed in 1951 by Kuniharu Akiyama.[48] Many of the electroacoustic tape pieces they produced were used as incidental music for radio, film, and theatre. They also held concerts employing a slide show synchronized with a recorded soundtrack.[49] Composers outside of the Jikken Kobo, such as Yasushi Akutagawa, Saburo Tominaga and Shiro Fukai, were also experimenting with radiophonic tape music between 1952 and 1953.[46] Musique concrète was introduced to Japan by Toshiro Mayuzumi, who was influenced by a Pierre Schaeffer concert. From 1952, he composed tape music pieces for a comedy film, a radio broadcast, and a radio drama.[48][48][50][50] However, Schaeffer's concept of sound object was not influential among Japanese composers, who were mainly interested in overcoming the restrictions of human performance.[51] This led to several Japanese electroacoustic musicians making use of serialism and twelve-tone techniques,[51] evident in Yoshiro Irino's 1951 dodecaphonic piece "Concerto da Camera",[50] in the organization of electronic sounds in Mayuzumi's "X, Y, Z for Musique Concrète", and later in Shibata's electronic music by 1956.[52] Modelling the NWDR studio in Cologne, NHK established an electronic music studio in Tokyo in 1955, which became one of the world's leading electronic music facilities. The NHK Studio was equipped with technologies such as tone-generating and audio processing equipment, recording and radiophonic equipment, ondes Martenot, Monochord and Melochord, sine-wave oscillators, tape recorders, ring modulators, band-pass filters, and four- and eight-channel mixers. Musicians associated with the studio included Toshiro Mayuzumi, Minao Shibata, Joji Yuasa, Toshi Ichiyanagi, and Toru Takemitsu. The studio's first electronic compositions were completed in 1955, including Mayuzumi's five-minute pieces "Studie I: Music for Sine Wave by Proportion of Prime Number", "Music for Modulated Wave by Proportion of Prime Number" and "Invention for Square Wave and Sawtooth Wave" produced using the studio's various tone-generating capabilities, and Shibata's 20-minute stereo piece "Musique Concrète for Stereophonic Broadcast".[53][54] American electronic musicIn the United States, electronic music was being created as early as 1939, when John Cage published Imaginary Landscape, No. 1, using two variable-speed turntables, frequency recordings, muted piano, and cymbal, but no electronic means of production. Cage composed five more "Imaginary Landscapes" between 1942 and 1952 (one withdrawn), mostly for percussion ensemble, though No. 4 is for twelve radios and No. 5, written in 1952, uses 42 recordings and is to be realized as a magnetic tape. According to Otto Luening, Cage also performed a William [sic] Mix at Donaueschingen in 1954, using eight loudspeakers, three years after his alleged collaboration.[clarification needed] Williams Mix was a success at the Donaueschingen Festival, where it made a "strong impression".[55] The Music for Magnetic Tape Project was formed by members of the New York School (John Cage, Earle Brown, Christian Wolff, David Tudor, and Morton Feldman),[56] and lasted three years until 1954. Cage wrote of this collaboration: "In this social darkness, therefore, the work of Earle Brown, Morton Feldman, and Christian Wolff continues to present a brilliant light, for the reason that at the several points of notation, performance, and audition, action is provocative."[57] Cage completed Williams Mix in 1953 while working with the Music for Magnetic Tape Project.[58] The group had no permanent facility, and had to rely on borrowed time in commercial sound studios, including the studio of Louis and Bebe Barron. Columbia-Princeton CenterIn the same year Columbia University purchased its first tape recorder—a professional Ampex machine—for the purpose of recording concerts. Vladimir Ussachevsky, who was on the music faculty of Columbia University, was placed in charge of the device, and almost immediately began experimenting with it. Herbert Russcol writes: "Soon he was intrigued with the new sonorities he could achieve by recording musical instruments and then superimposing them on one another."[59] Ussachevsky said later: "I suddenly realized that the tape recorder could be treated as an instrument of sound transformation."[59] On Thursday, May 8, 1952, Ussachevsky presented several demonstrations of tape music/effects that he created at his Composers Forum, in the McMillin Theatre at Columbia University. These included Transposition, Reverberation, Experiment, Composition, and Underwater Valse. In an interview, he stated: "I presented a few examples of my discovery in a public concert in New York together with other compositions I had written for conventional instruments."[59] Otto Luening, who had attended this concert, remarked: "The equipment at his disposal consisted of an Ampex tape recorder . . . and a simple box-like device designed by the brilliant young engineer, Peter Mauzey, to create feedback, a form of mechanical reverberation. Other equipment was borrowed or purchased with personal funds."[60] Just three months later, in August 1952, Ussachevsky traveled to Bennington, Vermont at Luening's invitation to present his experiments. There, the two collaborated on various pieces. Luening described the event: "Equipped with earphones and a flute, I began developing my first tape-recorder composition. Both of us were fluent improvisors and the medium fired our imaginations."[60] They played some early pieces informally at a party, where "a number of composers almost solemnly congratulated us saying, 'This is it' ('it' meaning the music of the future)."[60] Word quickly reached New York City. Oliver Daniel telephoned and invited the pair to "produce a group of short compositions for the October concert sponsored by the American Composers Alliance and Broadcast Music, Inc., under the direction of Leopold Stokowski at the Museum of Modern Art in New York. After some hesitation, we agreed. . . . Henry Cowell placed his home and studio in Woodstock, New York, at our disposal. With the borrowed equipment in the back of Ussachevsky's car, we left Bennington for Woodstock and stayed two weeks. . . . In late September, 1952, the travelling laboratory reached Ussachevsky's living room in New York, where we eventually completed the compositions."[60] Two months later, on October 28, Vladimir Ussachevsky and Otto Luening presented the first Tape Music concert in the United States. The concert included Luening's Fantasy in Space (1952)—"an impressionistic virtuoso piece"[60] using manipulated recordings of flute—and Low Speed (1952), an "exotic composition that took the flute far below its natural range."[60] Both pieces were created at the home of Henry Cowell in Woodstock, NY. After several concerts caused a sensation in New York City, Ussachevsky and Luening were invited onto a live broadcast of NBC's Today Show to do an interview demonstration—the first televised electroacoustic performance. Luening described the event: "I improvised some [flute] sequences for the tape recorder. Ussachevsky then and there put them through electronic transformations."[61] 1954 saw the advent of what would now be considered authentic electric plus acoustic compositions—acoustic instrumentation augmented/accompanied by recordings of manipulated or electronically generated sound. Three major works were premiered that year: Varèse's Déserts, for chamber ensemble and tape sounds, and two works by Luening and Ussachevsky: Rhapsodic Variations for the Louisville Symphony and A Poem in Cycles and Bells, both for orchestra and tape. Because he had been working at Schaeffer's studio, the tape part for Varèse's work contains much more concrete sounds than electronic. "A group made up of wind instruments, percussion and piano alternates with the mutated sounds of factory noises and ship sirens and motors, coming from two loudspeakers."[62] At the German premiere of Déserts in Hamburg, which was conducted by Bruno Maderna, the tape controls were operated by Karlheinz Stockhausen.[62] The title Déserts suggested to Varèse not only "all physical deserts (of sand, sea, snow, of outer space, of empty streets), but also the deserts in the mind of man; not only those stripped aspects of nature that suggest bareness, aloofness, timelessness, but also that remote inner space no telescope can reach, where man is alone, a world of mystery and essential loneliness."[63] In 1958, Columbia-Princeton developed the RCA Mark II Sound Synthesizer, the first programmable synthesizer.[64] Prominent composers such as Vladimir Ussachevsky, Otto Luening, Milton Babbitt, Charles Wuorinen, Halim El-Dabh, Bülent Arel and Mario Davidovsky used the RCA Synthesizer extensively in various compositions.[65] One of the most influential composers associated with the early years of the studio was Egypt's Halim El-Dabh who,[66] after having developed the earliest known electronic tape music in 1944,[32] became more famous for Leiyla and the Poet, a 1959 series of electronic compositions that stood out for its immersion and seamless fusion of electronic and folk music, in contrast to the more mathematical approach used by serial composers of the time such as Babbitt. El-Dabh's Leiyla and the Poet, released as part of the album Columbia-Princeton Electronic Music Center in 1961, would be cited as a strong influence by a number of musicians, ranging from Neil Rolnick, Charles Amirkhanian and Alice Shields to rock musicians Frank Zappa and The West Coast Pop Art Experimental Band.[67] Mid-to-late 1950s
CSIRAC, Australia's first digital computer, displayed at the Melbourne Museum
In 1954, Stockhausen composed his Elektronische Studie II—the first electronic piece to be published as a score. In 1955, more experimental and electronic studios began to appear. Notable were the creation of the Studio di fonologia musicale di Radio Milano, a studio at the NHK in Tokyo founded by Toshiro Mayuzumi, and the Philips studio at Eindhoven, the Netherlands, which moved to the University of Utrecht as the Institute of Sonology in 1960. The score for Forbidden Planet, by Louis and Bebe Barron,[68] was entirely composed using custom built electronic circuits and tape recorders in 1956. The world's first computer to play music was CSIRAC, which was designed and built by Trevor Pearcey and Maston Beard. Mathematician Geoff Hill programmed the CSIRAC to play popular musical melodies from the very early 1950s. In 1951 it publicly played the Colonel Bogey March, of which no known recordings exist.[69] However, CSIRAC played standard repertoire and was not used to extend musical thinking or composition practice. CSIRAC was never recorded, but the music played was accurately reconstructed. The oldest known recordings of computer-generated music were played by the Ferranti Mark 1 computer, a commercial version of the Baby Machine from the University of Manchester in the autumn of 1951.[70] The music program was written by Christopher Strachey. The impact of computers continued in 1956. Lejaren Hiller and Leonard Isaacson composed Illiac Suite for string quartet, the first complete work of computer-assisted composition using algorithmic composition. "... Hiller postulated that a computer could be taught the rules of a particular style and then called on to compose accordingly."[71] Later developments included the work of Max Mathews at Bell Laboratories, who developed the influential MUSIC I program in 1957, one of the first computer programs to play electronic music. Vocoder technology was also a major development in this early era. In 1956, Stockhausen composed Gesang der Jünglinge, the first major work of the Cologne studio, based on a text from the Book of Daniel. An important technological development of that year was the invention of the Clavivox synthesizer by Raymond Scott with subassembly by Robert Moog. Also in 1957, Kid Baltan (Dick Raaymakers) and Tom Dissevelt released their debut album, Song Of The Second Moon, recorded at the Philips studio.[72] The public remained interested in the new sounds being created around the world, as can be deduced by the inclusion of Varèse's Poème électronique, which was played over four hundred loudspeakers at the Philips Pavilion of the 1958 Brussels World Fair. That same year, Mauricio Kagel, an Argentine composer, composed Transición II. The work was realized at the WDR studio in Cologne. Two musicians performed on a piano, one in the traditional manner, the other playing on the strings, frame, and case. Two other performers used tape to unite the presentation of live sounds with the future of prerecorded materials from later on and its past of recordings made earlier in the performance. Expansion: 1960s
These were fertile years for electronic music—not just for academia, but for independent artists as synthesizer technology became more accessible. By this time, a strong community of composers and musicians working with new sounds and instruments was established and growing. 1960 witnessed the composition of Luening's Gargoyles for violin and tape as well as the premiere of Stockhausen's Kontakte for electronic sounds, piano, and percussion. This piece existed in two versions—one for 4-channel tape, and the other for tape with human performers. "In Kontakte, Stockhausen abandoned traditional musical form based on linear development and dramatic climax. This new approach, which he termed 'moment form,' resembles the 'cinematic splice' techniques in early twentieth century film."[73] The theremin had been in use since the 1920s but it attained a degree of popular recognition through its use in science-fiction film soundtrack music in the 1950s (e.g., Bernard Herrmann's classic score for The Day the Earth Stood Still).[74] In the UK in this period, the BBC Radiophonic Workshop (established in 1958) came to prominence, thanks in large measure to their work on the BBC science-fiction series Doctor Who. One of the most influential British electronic artists in this period[75] was Workshop staffer Delia Derbyshire, who is now famous for her 1963 electronic realisation of the iconic Doctor Who theme, composed by Ron Grainer. 
Israeli composer Josef Tal at the Electronic Music Studio in Jerusalem (c. 1965) with Hugh Le Caine's Creative Tape Recorder (a sound synthesizer) aka "Multi-track"
In 1961 Josef Tal established the Centre for Electronic Music in Israel at The Hebrew University, and in 1962 Hugh Le Caine arrived in Jerusalem to install his Creative Tape Recorder in the centre.[76] In the 1990s Tal conducted, together with Dr Shlomo Markel, in cooperation with the Technion – Israel Institute of Technology, and VolkswagenStiftung a research project (Talmark) aimed at the development of a novel musical notation system for electronic music.[77] Milton Babbitt composed his first electronic work using the synthesizer—his Composition for Synthesizer (1961)—which he created using the RCA synthesizer at the Columbia-Princeton Electronic Music Center.
The collaborations also occurred across oceans and continents. In 1961, Ussachevsky invited Varèse to the Columbia-Princeton Studio (CPEMC). Upon arrival, Varese embarked upon a revision of Déserts. He was assisted by Mario Davidovsky and Bülent Arel.[79] The intense activity occurring at CPEMC and elsewhere inspired the establishment of the San Francisco Tape Music Center in 1963 by Morton Subotnick, with additional members Pauline Oliveros, Ramon Sender, Anthony Martin, and Terry Riley.[citation needed] Later, the Center moved to Mills College, directed by Pauline Oliveros, where it is today known as the Center for Contemporary Music.[80] Simultaneously in San Francisco, composer Stan Shaff and equipment designer Doug McEachern, presented the first “Audium” concert at San Francisco State College (1962), followed by a work at the San Francisco Museum of Modern Art (1963), conceived of as in time, controlled movement of sound in space. Twelve speakers surrounded the audience, four speakers were mounted on a rotating, mobile-like construction above.[81] In an SFMOMA performance the following year (1964), San Francisco Chronicle music critic Alfred Frankenstein commented, "the possibilities of the space-sound continuum have seldom been so extensively explored".[81] In 1967, the first Audium, a "sound-space continuum" opened, holding weekly performances through 1970. In 1975, enabled by seed money from the National Endowment for the Arts, a new Audium opened, designed floor to ceiling for spatial sound composition and performance.[82] “In contrast, there are composers who manipulated sound space by locating multiple speakers at various locations in a performance space and then switching or panning the sound between the sources. In this approach, the composition of spatial manipulation is dependent on the location of the speakers and usually exploits the acoustical properties of the enclosure. Examples include Varese's Poeme Electronique (tape music performed in the Philips Pavilion of the 1958 World Fair, Brussels) and Stanley Schaff's [sic] Audium installation, currently active in San Francisco”[83] Through weekly programs (over 4,500 in 40 years), Shaff “sculpts” sound, performing now-digitized spatial works live through 176 speakers.[84] A well-known example of the use of Moog's full-sized Moog modular synthesizer is the Switched-On Bach album by Wendy Carlos, which triggered a craze for synthesizer music. Along with the Moog modular synthesizer, other makes of this period included ARP and Buchla. Pietro Grossi was an Italian pioneer of computer composition and tape music, who first experimented with electronic techniques in the early sixties. Grossi was a cellist and composer, born in Venice in 1917. He founded the S 2F M (Studio de Fonologia Musicale di Firenze) in 1963 in order to experiment with electronic sound and composition. Computer musicMusical notes were first generated by a computer programmed by Alan Turing at the Computing Machine Laboratory of the University of Manchester in 1948. The first music proper, a performance of the British National Anthem was programmed by Christopher Strachey on the Mark II Manchester Electronic Computer at same venue, in 1951. Later that year, short extracts of three pieces were recorded there by a BBC outside broadcasting unit: the National Anthem, "Ba, Ba Black Sheep, and "In the Mood". Researchers at the University of Canterbury, Christchurch restored the acetate master disc in 2016 and the results may be heard on Soundcloud.[85][86] CSIRAC, the first computer to play music in public did so in August 1951.[87] One of the first large-scale public demonstrations of computer music was a pre-recorded national radio broadcast on the NBC radio network program Monitor on February 10, 1962. In 1961, LaFarr Stuart programmed Iowa State University's CYCLONE computer (a derivative of the Illiac) to play simple, recognizable tunes through an amplified speaker that had been attached to the system originally for administrative and diagnostic purposes. An interview with Mr. Stuart accompanied his computer music. Laurie Spiegel is also notable for her development of "Music Mouse—an Intelligent Instrument" (1986) for Macintosh, Amiga, and Atari computers. The intelligent-instrument name refers to the program's built-in knowledge of chord and scale convention and stylistic constraints. She continued to update the program through Macintosh OS 9, and as of 2012[update], it remained available for purchase or demo download from her Web site. The late 1950s, 1960s and 1970s also saw the development of large mainframe computer synthesis. Starting in 1957, Max Mathews of Bell Labs developed the MUSIC programs, culminating in MUSIC V, a direct digital synthesis language[88] Live electronicsLive electronics (or electroacoustic improvisation) is a form of experimental improvised music that developed in response to the rigidity of sound-based composition for fixed media such as musique concrète, early studio based electronic music, and computer music. Musical improvisation often plays a large role in the performance of this music.[citation needed] In Europe in 1964, Karlheinz Stockhausen composed Mikrophonie I for tam-tam, hand-held microphones, filters, and potentiometers, and Mixtur for orchestra, four sine-wave generators, and four ring modulators. In 1965 he composed Mikrophonie II for choir, Hammond organ, and ring modulators.[89] In 1966–67, Reed Ghazala discovered and began to teach "circuit bending"—the application of the creative short circuit, a process of chance short-circuiting, creating experimental electronic instruments, exploring sonic elements mainly of timbre and with less regard to pitch or rhythm, and influenced by John Cage's aleatoric music [sic] concept.[90] Japanese instrumentsIn the 1960s, Japanese electronic musical instruments began influencing the international music industry.[91] Ikutaro Kakehashi, who founded Ace Tone in 1960, invented the first electronic drum.[92] At NAMM 1964, he revealed it as the R-1 Rhythm Ace, a hand-operated percussion device that played electronic drum sounds manually as the user pushed buttons, in a similar fashion to modern electronic drum pads.[92][93][94] In 1963, Korg released the Donca-Matic DA-20, an electro-mechanical drum machine.[95] In 1965, Nippon Columbia patented a fully electronic drum machine.[96] Korg released the Donca-Matic DC-11 electronic drum machine in 1966, which they followed with the Korg Mini Pops, which was developed as an option for the Yamaha Electone electric organ.[95] Korg's Stageman and Mini Pops series were notable for "natural metallic percussion" sounds and incorporating controls for drum "breaks and fill-ins."[91] In 1967, Ace Tone founder Ikutaro Kakehashi patented a preset rhythm-pattern generator using diode matrix circuit,[97] which he released as the FR-1 Rhythm Ace drum machine the same year.[92] It offered 16 preset patterns, and four buttons to manually play each instrument sound (cymbal, claves, cowbell and bass drum). The rhythm patterns could also be cascaded together by pushing multiple rhythm buttons simultaneously, and the possible combination of rhythm patterns were more than a hundred.[92] Ace Tone's Rhythm Ace drum machines found their way into popular music from the late 1960s, followed by Korg drum machines in the 1970s.[91] Kakehashi later left Ace Tone and founded Roland Corporation in 1972, with Roland synthesizers and drum machines becoming highly influential for the next several decades.[92] The company would go on to have a big impact on popular music, and do more to shape popular electronic music than any other company.[94] Turntablism has origins in the invention of direct-drive turntables. Early belt-drive turntables were unsuitable for turntablism, since they had a slow start-up time, and they were prone to wear-and-tear and breakage,[98] as the belt would break from backspin or scratching.[99] The first direct-drive turntable was invented by Shuichi Obata, an engineer at Matsushita (now Panasonic),[100] based in Osaka, Japan.[98] It eliminated belts, and instead employed a motor to directly drive a platter on which a vinyl record rests.[101] In 1969, Matsushita released it as the SP-10,[101] the first direct-drive turntable on the market,[102] and the first in their influential Technics series of turntables.[101] It was succeeded by the Technics SL-1100 and SL-1200 in the early 1970s, and they were widely adopted by hip hop musicians,[101] with the SL-1200 remaining the most widely used turntable in DJ culture for several decades.[103] Jamaican dub musicIn Jamaica, a form of popular electronic music[citation needed] emerged in the 1960s, dub music, rooted in sound system culture. Dub music was pioneered by studio engineers, such as Sylvan Morris, King Tubby, Errol Thompson, Lee "Scratch" Perry, and Scientist, producing reggae-influenced experimental music with electronic sound technology, in recording studios and at sound system parties.[104] Their experiments included forms of tape-based composition comparable to aspects of musique concrète, an emphasis on repetitive rhythmic structures (often stripped of their harmonic elements) comparable to minimalism, the electronic manipulation of spatiality, the sonic electronic manipulation of pre-recorded musical materials from mass media, deejays toasting over pre-recorded music comparable to live electronic music,[104] remixing music,[105] turntablism,[106] and the mixing and scratching of vinyl.[107] Despite the limited electronic equipment available to dub pioneers such as King Tubby and Lee "Scratch" Perry, their experiments in remix culture were musically cutting-edge.[105] King Tubby, for example, was a sound system proprietor and electronics technician, whose small front-room studio in the Waterhouse ghetto of western Kingston was a key site of dub music creation.[108] Late 1960s to early 1980sRise of popular electronic music
Keith Emerson performing in St. Petersburg in 2008
In the late 1960s, pop and rock musicians, including the Beach Boys and the Beatles, began to use electronic instruments, like the theremin and Mellotron, to supplement and define their sound. In his book Electronic and Experimental Music, Thom Holmes recognises the Beatles' 1966 recording "Tomorrow Never Knows" as the song that "ushered in a new era in the use of electronic music in rock and pop music" due to the band's incorporation of tape loops and reversed and speed-manipulated tape sounds.[109] By the end of the decade, the Moog synthesizer took a leading place in the sound of emerging progressive rock with bands including Pink Floyd, Yes, Emerson, Lake & Palmer, and Genesis making them part of their sound. Gershon Kingsleys Popcorn was the first international electronic dance hit in 1969. Instrumental prog rock was particularly significant in continental Europe, allowing bands like Kraftwerk, Tangerine Dream, Can, and Faust to circumvent the language barrier.[110] Their synthesiser-heavy "krautrock", along with the work of Brian Eno (for a time the keyboard player with Roxy Music), would be a major influence on subsequent electronic rock.[111] Ambient dub was pioneered by King Tubby and other Jamaican sound artists, using DJ-inspired ambient electronics, complete with drop-outs, echo, equalization and psychedelic electronic effects. It featured layering techniques and incorporated elements of world music, deep basslines and harmonic sounds.[112] Techniques such as a long echo delay were also used.[113] Other notable artists within the genre include Dreadzone, Higher Intelligence Agency, The Orb, Ott, Loop Guru, Woob and Transglobal Underground.[114] Electronic rock was also produced by several Japanese musicians, including Isao Tomita's Electric Samurai: Switched on Rock (1972), which featured Moog synthesizer renditions of contemporary pop and rock songs,[115] and Osamu Kitajima's progressive rock album Benzaiten (1974).[116] The mid-1970s saw the rise of electronic art music musicians such as Jean Michel Jarre, Vangelis, and Tomita, who with Brian Eno were a significant influence on the development of new-age music.[117] Dub music influenced electronic musical techniques later adopted by hip hop music, when Jamaican immigrant DJ Kool Herc in the early 1970s introduced Jamaica's sound system culture and dub music techniques to America. One such technique that became popular in hip hop culture was playing two copies of the same record on two turntables in alternation, extending the b-dancers' favorite section.[118] The turntable eventually went on to become the most visible electronic musical instrument, and occasionally the most virtuosic, in the 1980s and 1990s.[106] After the arrival of punk rock, a form of basic electronic rock emerged, increasingly using new digital technology to replace other instruments. Pioneering bands included Ultravox with their 1977 track "Hiroshima Mon Amour" on Ha!-Ha!-Ha!,[119] Yellow Magic Orchestra from Japan, Gary Numan, Orchestral Manoeuvres in the Dark, Depeche Mode, and The Human League.[120] Yellow Magic Orchestra in particular helped pioneer synth-pop with their self-titled album (1978) and Solid State Survivor (1979). The definition of MIDI and the development of digital audio made the development of purely electronic sounds much easier.[121] These developments led to the growth of synth-pop, which after it was adopted by the New Romantic movement, allowed synthesizers to dominate the pop and rock music of the early 80s. Key acts included Duran Duran, Spandau Ballet, A Flock of Seagulls, Culture Club, Talk Talk, Japan, and Eurythmics. Synth-pop sometimes used synthesizers to replace all other instruments, until the style began to fall from popularity in the mid-1980s.[120] Keyboard synthesizersReleased in 1970 by Moog Music, the Mini-Moog was among the first widely available, portable and relatively affordable synthesizers. It became once the most widely used synthesizer at that time in both popular and electronic art music.[122] Patrick Gleeson, playing live with Herbie Hancock in the beginning of the 1970s, pioneered the use of synthesizers in a touring context, where they were subject to stresses the early machines were not designed for.[123][124] In 1974, the WDR studio in Cologne acquired an EMS Synthi 100 synthesizer, which a number of composers used to produce notable electronic works—including Rolf Gehlhaar's Fünf deutsche Tänze (1975), Karlheinz Stockhausen's Sirius (1975–76), and John McGuire's Pulse Music III (1978).[125] Digital synthesisIn 1975, the Japanese company Yamaha licensed the algorithms for frequency modulation synthesis (FM synthesis) from John Chowning, who had experimented with it at Stanford University since 1971.[126][127] Yamaha's engineers began adapting Chowning's algorithm for use in a digital synthesizer, adding improvements such as the "key scaling" method to avoid the introduction of distortion that normally occurred in analog systems during frequency modulation.[128] However, the first commercial digital synthesizer to be released would be the Australian Fairlight company's Fairlight CMI (Computer Musical Instrument) in 1979, as the first practical polyphonic digital synthesizer/sampler system. In 1980, Yamaha eventually released the first FM digital synthesizer, the Yamaha GS-1, but at an expensive price.[129] In 1983, Yamaha introduced the first stand-alone digital synthesizer, the DX7, which also used FM synthesis and would become one of the best-selling synthesizers of all time.[126] The DX7 was known for its recognizable bright tonalities that was partly due to an overachieving sampling rate of 57 kHz.[130] Barry Vercoe describes one of his experiences with early computer sounds: 
IRCAM, STEIM, and ElektronmusikstudionIRCAM in Paris became a major center for computer music research and realization and development of the Sogitec 4X computer system,[133] featuring then revolutionary real-time digital signal processing. Pierre Boulez's Répons (1981) for 24 musicians and 6 soloists used the 4X to transform and route soloists to a loudspeaker system. STEIM is a center for research and development of new musical instruments in the electronic performing arts, located in Amsterdam, Netherlands. STEIM has existed since 1969. It was founded by Misha Mengelberg, Louis Andriessen, Peter Schat, Dick Raaymakers, Jan van Vlijmen[nl], Reinbert de Leeuw, and Konrad Boehmer. This group of Dutch composers had fought for the reformation of Amsterdam's feudal music structures; they insisted on Bruno Maderna's appointment as musical director of the Concertgebouw Orchestra and enforced the first public fundings for experimental and improvised electronic music in The Netherlands. Elektronmusikstudion (EMS), formerly known as Electroacoustic Music in Sweden, is the Swedish national centre for electronic music and sound art. The research organisation started in 1964 and is based in Stockholm. Birth of MIDIIn 1980, a group of musicians and music merchants met to standardize an interface that new instruments could use to communicate control instructions with other instruments and computers. This standard was dubbed Musical Instrument Digital Interface (MIDI) and resulted from a collaboration between leading manufacturers, initially Sequential Circuits, Oberheim, Roland—and later, other participants that included Yamaha, Korg, and Kawai.[134] A paper was authored by Dave Smith of Sequential Circuits and proposed to the Audio Engineering Society in 1981. Then, in August 1983, the MIDI Specification 1.0 was finalized. MIDI technology allows a single keystroke, control wheel motion, pedal movement, or command from a microcomputer to activate every device in the studio remotely and in synchrony, with each device responding according to conditions predetermined by the composer. MIDI instruments and software made powerful control of sophisticated instruments easily affordable by many studios and individuals. Acoustic sounds became reintegrated into studios via sampling and sampled-ROM-based instruments. Miller Puckette developed graphic signal-processing software for 4X called Max (after Max Mathews) and later ported it to Macintosh (with Dave Zicarelli extending it for Opcode)[135] for real-time MIDI control, bringing algorithmic composition availability to most composers with modest computer programming background. Sequencers and drum machines
The early 1980s saw the rise of bass synthesizers, the most influential being the Roland TB-303, a bass synthesizer and sequencer released in late 1981 that later became a fixture in electronic dance music,[136] particularly acid house.[137] One of the first to use it was Charanjit Singh in 1982, though it wouldn't be popularized until Phuture's "Acid Tracks" in 1987.[137] Music sequencers began being used around the mid 20th century, and Tomita's albums in mid-1970s being later examples.[115] In 1978, Yellow Magic Orchestra were using computer-based technology in conjunction with a synthesiser to produce popular music,[138] making their early use of the microprocessor-based Roland MC-8 Microcomposer sequencer.[139][140][not in citation given] Drum machines, also known as rhythm machines, also began being used around the late-1950s, with a later example being Osamu Kitajima's progressive rock album Benzaiten (1974), which used a rhythm machine along with electronic drums and a synthesizer.[116] In 1977, Ultravox's "Hiroshima Mon Amour" was one of the first singles to use the metronome-like percussion of a Roland TR-77 drum machine.[119] In 1980, Roland Corporation released the TR-808, one of the first and most popular programmable drum machines. The first band to use it was Yellow Magic Orchestra in 1980, and it would later gain widespread popularity with the release of Marvin Gaye's "Sexual Healing" and Afrika Bambaataa's "Planet Rock" in 1982.[141] The TR-808 was a fundamental tool in the later Detroit techno scene of the late 1980s, and was the drum machine of choice for Derrick May and Juan Atkins.[142] ChiptunesThe characteristic lo-fi sound of chip music was initially the result of early sound cards' technical limitations; however, the sound has since become sought after in its own right. Late 1980s to 1990sRise of dance musicThe trend has continued to the present day with modern nightclubs worldwide regularly playing electronic dance music (EDM). Today, electronic dance music has radio stations,[143] websites,[144] and publications like Mixmag dedicated solely to the genre. Moreover, the genre has found commercial and cultural significance in the United States and North America, thanks to the wildly popular big room house/EDM sound that has been incorporated into U.S. pop music[145] and the rise of large-scale commercial raves such as Electric Daisy Carnival, Tomorrowland (festival) and Ultra Music Festival. AdvancementsOther recent developments included the Tod Machover (MIT and IRCAM) composition Begin Again Again for "hypercello", an interactive system of sensors measuring physical movements of the cellist. Max Mathews developed the "Conductor" program for real-time tempo, dynamic and timbre control of a pre-input electronic score. Morton Subotnick released a multimedia CD-ROM All My Hummingbirds Have Alibis. 2000s and 2010sAs computer technology has become more accessible and music software has advanced, interacting with music production technology is now possible using means that bear no relationship to traditional musical performance practices:[146] for instance, laptop performance (laptronica),[147] live coding[148] and Algorave. In general, the term Live PA refers to any live performance of electronic music, whether with laptops, synthesizers, or other devices. In the last decade, a number of software-based virtual studio environments have emerged, with products such as Propellerhead's Reason and Ableton Live finding popular appeal.[149] Such tools provide viable and cost-effective alternatives to typical hardware-based production studios, and thanks to advances in microprocessor technology, it is now possible to create high quality music using little more than a single laptop computer. Such advances have democratized music creation,[150] leading to a massive increase in the amount of home-produced electronic music available to the general public via the internet. Artists can now also individuate their production practice by creating personalized software synthesizers, effects modules, and various composition environments. Devices that once existed exclusively in the hardware domain can easily have virtual counterparts. Some of the more popular software tools for achieving such ends are commercial releases such as Max/Msp and Reaktor and open source packages such as Csound, Pure Data, SuperCollider, and ChucK. Circuit bendingCircuit bending is the creative customization of the circuits within electronic devices such as low voltage, battery-powered guitar effects, children's toys and small digital synthesizers to create new musical or visual instruments and sound generators. Emphasizing spontaneity and randomness, the techniques of circuit bending have been commonly associated with noise music, though many more conventional contemporary musicians and musical groups have been known to experiment with "bent" instruments. Circuit bending usually involves dismantling the machine and adding components such as switches and potentiometers that alter the circuit. With the revived interest for analogue synthesizers, circuit bending became a cheap solution for many experimental musicians to create their own individual analogue sound generators. Nowadays many schematics can be found to build noise generators such as the Atari Punk Console or the Dub Siren as well as simple modifications for children toys such as the famous Speak & Spells that are often modified by circuit benders. Reed Ghazala has explored circuit bending with the Speak & Spell toy, and has held apprenticeships and workshops on circuit bending.[151][not in citation given] Modular synth revivalFollowing the circuit bending culture, musicians also began to build their own modular synthesizers, causing a renewed interest for the early 1960s designs. Eurorack became a popular system. See also
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