Electroacoustic music in the context of "Spatial music"

Noise music (or simply noise) is a subgenre of experimental music that is characterised by its use of unwanted noise as a primary musical element. The genre has roots in early 20th century avant-garde music, but later drew influence from industrial music. It is characterized by a rejection of conventional music theory and traditional song structures, often featuring little or no melody, rhythm, or harmony. This type of music tends to challenge the conventional distinction between musical and non-musical sound.

"Noise as music" originated as an avant-garde music style in the 1910s through the work of Luigi Russolo an Italian Futurist, who published the manifesto The Art of Noises in 1913. Elements of noise music were later explored by artists in the Dada and Fluxus movements, as well as through electroacoustic music, modern classical and musique concrète. Composers such as John Cage, Edgard Varèse and James Tenney would explicitly use the term "noise" to describe some of their experimental practices. During the 1960s and 1970s, compositions such as Robert Ashley's "The Wolfman" (1964) and Pauline Oliveros "A Little Noise In The System" (1967) were among the earliest examples of contemporary noise music. While works by non-academic artists such as Lou Reed's Metal Machine Music were influential for later noise artists.

Electronic music broadly is a group of music genres that employ electronic musical instruments, circuitry-based music technology and software, or general-purpose electronics (such as personal computers) in its creation. It includes both music made using electronic and electromechanical means (electroacoustic music). Pure electronic instruments depend entirely on circuitry-based sound generation, for instance using devices such as an electronic oscillator, theremin, or synthesizer: no acoustic waves need to be previously generated by mechanical means and then converted into electrical signals. On the other hand, electromechanical instruments have mechanical parts such as strings or hammers that generate the sound waves, together with electric elements including magnetic pickups, power amplifiers and loudspeakers that convert the acoustic waves into electrical signals, process them and convert them back into sound waves. Such electromechanical devices include the telharmonium, Hammond organ, electric piano and electric guitar.

The first electronic musical devices were developed at the end of the 19th century. During the 1920s and 1930s, some electronic instruments were introduced and the first compositions featuring them were written. 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 by Karlheinz Stockhausen. Electronic music was also created in Japan and the United States beginning in the 1950s and algorithmic composition with computers was first demonstrated in the same decade.

Experimental music is a general label for any music or music genre that pushes existing boundaries and genre definitions. Experimental compositional practice is defined broadly by exploratory sensibilities radically opposed to, and questioning of, institutionalized compositional, performing, and aesthetic conventions in music. Elements of experimental music include indeterminacy, in which the composer introduces the elements of chance or unpredictability with regard to either the composition or its performance. Artists may approach a hybrid of disparate styles or incorporate unorthodox and unique elements.

The practice became prominent in the mid-20th century, particularly in Europe and North America. John Cage was one of the earliest composers to use the term and one of experimental music's primary innovators, utilizing indeterminacy techniques and seeking unknown outcomes. In France, as early as 1953, Pierre Schaeffer had begun using the term musique expérimentale to describe compositional activities that incorporated tape music, musique concrète, and elektronische Musik. In America, a quite distinct sense of the term was used in the late 1950s to describe computer-controlled composition associated with composers such as Lejaren Hiller. Harry Partch and Ivor Darreg worked with other tuning scales based on the physical laws for harmonic music. For this music they both developed a group of experimental musical instruments. Musique concrète is a form of electroacoustic music that utilises acousmatic sound as a compositional resource. Free improvisation or free music is improvised music without any rules beyond the taste or inclination of the musician(s) involved; in many cases, the musicians make an active effort to avoid clichés; i.e., overt references to recognizable musical conventions or genres.

New-age is a genre of music intended to create artistic inspiration, relaxation, and optimism. It is used by listeners for yoga, massage, meditation, and reading as a method of stress management to bring about a state of ecstasy rather than trance, or to create a peaceful atmosphere in homes or other environments. It is sometimes associated with environmentalism and New Age spirituality; however, most of its artists have nothing to do with "New Age spirituality", and some even reject the term.

New-age music includes both acoustic forms, featuring instruments such as flutes, piano, acoustic guitar, non-Western acoustic instruments, while also engaging with electronic forms, frequently relying on sustained synth pads or long sequencer-based runs. New-age artists often combine these approaches to create electroacoustic music. Vocal arrangements were initially rare in the genre, but as it has evolved, vocals have become more common, especially those featuring Native American-, Sanskrit-, or Tibetan-influenced chants, or lyrics based on mythology such as Celtic legends.

John Coolidge Adams (born February 15, 1947) is an American composer and conductor. Among the most regularly performed composers of contemporary classical music, he is particularly noted for his operas, many of which center around historical events. Apart from opera, his oeuvre includes orchestral, concertante, vocal, choral, chamber, electroacoustic, and piano music.

Born in Worcester, Massachusetts, Adams grew up in a musical family and was exposed to classical music, jazz, musical theatre, and rock music. He attended Harvard University, studying with Leon Kirchner, Roger Sessions, and David Del Tredici, among others. His earliest work was aligned with modernist music, but he began to disagree with its tenets upon reading John Cage's Silence: Lectures and Writings. Teaching at the San Francisco Conservatory of Music, Adams developed a minimalist aesthetic first fully realized in Phrygian Gates (1977) and later in the string septet Shaker Loops. Adams became increasingly active in San Francisco's contemporary music scene, and his orchestral works Harmonium (1980–1981) and Harmonielehre (1985) first gained him national attention. Other popular works from this time include the fanfare Short Ride in a Fast Machine (1986) and the orchestral work El Dorado (1991).

A contact microphone is a form of microphone that senses audio vibrations through contact with solid objects. Unlike normal air microphones, contact microphones are almost completely insensitive to air vibrations but transduce only structure-borne sound. Often used as acoustic leakage probes, they also enjoy wide usage by electroacoustic music artists experimenting with sound. Contact microphones can be used to amplify sound from acoustic musical instruments, to sense drum hits, for triggering electronic samples, and to record sound in challenging environments, such as underwater under high pressure.

John Milton Cage Jr. (September 5, 1912 – August 12, 1992) was an American composer and music theorist. A pioneer of indeterminacy in music, electroacoustic music, and non-standard use of musical instruments, Cage was one of the leading figures of the post-war avant-garde. Critics have lauded him as one of the most influential composers of the 20th century. He was also instrumental in the development of modern dance, mostly through his association with choreographer Merce Cunningham, who was also Cage's romantic partner for most of their lives.

Cage's teachers included Henry Cowell (1933) and Arnold Schoenberg (1933–35), both known for their radical innovations in music, but Cage's major influences lay in various East and South Asian cultures. Through his studies of Indian philosophy and Zen Buddhism in the late 1940s, Cage came to the idea of aleatoric or chance-controlled music, which he started composing in 1951. The I Ching, an ancient Chinese classic text and decision-making tool, became Cage's standard composition tool for the rest of his life. In a 1957 lecture, "Experimental Music", he described music as "a purposeless play" which is "an affirmation of life – not an attempt to bring order out of chaos nor to suggest improvements in creation, but simply a way of waking up to the very life we're living".

Pierre Henri Marie Schaeffer (English pronunciation: /piːˈɛər ˈhɛnriː məˈriː ˈʃeɪfər/ , French pronunciation: [ʃɛfɛʁ]; 14 August 1910 – 19 August 1995) was a French composer, writer, broadcaster, engineer, musicologist, acoustician and founder of Groupe de Recherche de Musique Concrète (GRMC). His innovative work in both the sciences—particularly communications and acoustics—and the various arts of music, literature and radio presentation after the end of World War II, as well as his anti-nuclear activism and cultural criticism garnered him widespread recognition in his lifetime.

Schaeffer is most widely and currently recognized for his accomplishments in electronic and experimental music, at the core of which stands his role as the chief developer of a unique and early form of avant-garde music known as musique concrète. The genre emerged in Europe from the utilization of new music technology developed in the post-war era, following the advance of electroacoustic and acousmatic music.

Luc Ferrari (5 February 1929 – 22 August 2005) was a French composer of Italian heritage and a pioneer in musique concrète and electroacoustic music. He was a founding member of RTF's Groupe de Recherches Musicales (GRMC), working alongside composers such as Pierre Schaeffer and Pierre Henry.

Acousmatic music (from Greek ἄκουσμα akousma, "a thing heard") is a form of electroacoustic music that is specifically composed for presentation using speakers, as opposed to a live performance. It stems from a compositional tradition that dates back to the origins of musique concrète in the late 1940s. Unlike acoustic or electroacoustic musical works that are realized from scores, compositions that are purely acousmatic (in listening terms) often exist solely as fixed media audio recordings.

The compositional practice of acousmatic music features acousmatic sound, sound which is heard but not seen, as a central musical aspect. Other aspects traditionally thought of as 'musical' such as melody, harmony, rhythm, metre may be present but more often consideration is given to sound-based characteristics such as timbre and spectrum. Compositional materials can include sounds derived from musical instruments, voice, electronically generated sound, or sounds employing audio signal processing, as well as general sound effects and field recordings.

Helmut Friedrich Lachenmann (German: [ˈhɛlmuːt ˈlaxn̩man] ; born 27 November 1935) is a German composer of contemporary classical music, pianist and academic teacher. He taught, among others, at the Darmstädter Ferienkurse, the Musikhochschule Stuttgart and the Musikhochschule Hannover.

As a private student of Luigi Nono in Venice, Lachenmann was inspired to reflect social and political contexts, and to include unconventional playing techniques and noises in his compositions. He stopped using electroacoustic music after working at the studio of the University of Ghent in 1965, but turned to what he called musique concrète instrumentale: calling for unusual and extreme sound production from traditional instruments. He created compositions of many genres. In an opera, Das Mädchen mit den Schwefelhölzern based on Andersen's "The Little Match Girl" and texts by Leonardo da Vinci and Gudrun Ensslin, the performers speak, play instruments, sing and act. Instrumental works include piano pieces, string quartets such as Gran Torso and Reigen seliger Geister, ensemble works such as Mouvement (- vor der Erstarrung), and music for large orchestra including Accanto which juxtaposes a solo clarinet to an "orchestra of noise, friction, and unorthodox sound generation". Lachenmann is regarded among the leading German composers of his time.

Richard Vance Maxfield (February 2, 1927 – June 27, 1969) was a composer of instrumental, electroacoustic, and electronic music.

Born in Seattle, Maxfield studied at Stanford University, University of California, Berkeley (with Roger Sessions) and privately with Ernst Krenek in Los Angeles. A Hertz Prize travel scholarship allowed Maxfield to travel to Europe, where he met Pierre Boulez, Karlheinz Stockhausen and Luigi Nono. In 1953 he studied at Tanglewood with Aaron Copland. In 1954–55 he studied at Princeton University with Sessions and his pupil Milton Babbitt. A Fulbright Scholarship allowed Maxfield to live in Europe between 1955 and 1957, where he studied with Luigi Dallapiccola and Bruno Maderna, lived for a brief period with Hans Werner Henze and met John Cage and David Tudor. In 1958, he attended Cage's courses at the New School for Social Research (now The New School). In 1959 he taught classes there himself, becoming the first American to teach purely electronic music (as opposed to electroacoustic music based on musique concrète-style recordings with microphones).

Denis Arthur Smalley (born 1946 in Nelson, New Zealand) is a composer of electroacoustic music, with a special interest in acousmatic music.