Experimental music in the context of "John Cage"

Screamo (also referred to as skramz) is a subgenre of emo that emerged in the early 1990s and emphasizes "willfully experimental dissonance and dynamics". San Diego–based bands Heroin and Antioch Arrow pioneered the genre in the early 1990s, and it was developed in the late 1990s mainly by bands from the East Coast of the United States such as Pg. 99, Orchid, Saetia, and I Hate Myself. Screamo is strongly influenced by hardcore punk and characterized by the use of screamed vocals. Lyrical themes usually include emotional pain, death, romance, and human rights. The term "screamo" has frequently been mistaken as referring to any music with screaming.

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.

The New York School was an informal group of American poets, painters, dancers, and musicians active in the 1950s and 1960s in New York City. They often drew inspiration from surrealism and the contemporary avant-garde art movements, in particular action painting, abstract expressionism, jazz, improvisational theater, experimental music, and the interaction of friends in the New York City art world's vanguard circle.

Avant-garde music is music that is considered to be at the forefront of innovation in its field, with the term avant-garde implying a critique of existing aesthetic conventions, rejection of the status quo in favor of unique or original elements, and the idea of deliberately challenging or alienating audiences. Avant-garde music may be distinguished from experimental music by the way it adopts an extreme position within a certain tradition, whereas experimental music lies outside tradition.

Minimal music (also called minimalism) is a form of art music or other compositional practice that employs limited or minimal musical materials. Prominent features of minimalist music include repetitive patterns or pulses, steady drones, consonant harmony, and reiteration of musical phrases or smaller units. It may include features such as phase shifting, resulting in what is termed phase music, or process techniques that follow strict rules, usually described as process music. The approach is marked by a non-narrative, non-teleological, and non-representational approach, and calls attention to the activity of listening by focusing on the internal processes of the music.

The approach originated on the West Coast of the United States in the late 1950s and early 1960s, particularly around the Bay Area, where La Monte Young, Terry Riley and Steve Reich were studying and living at the time. After the three composers moved to the East Coast, their music became associated with the New York Downtown music scene of the mid-1960s, where it was initially viewed as a form of experimental music called the New York Hypnotic School. In the Western art music tradition, the American composers Moondog, La Monte Young, Terry Riley, Steve Reich and Philip Glass are credited with being among the first to develop compositional techniques that exploit a minimal approach. The movement originally involved dozens of composers, although only five (Young, Riley, Reich, Glass, and later John Adams) emerged to become publicly associated with American minimal music; other lesser known pioneers included Dennis Johnson, Terry Jennings, Richard Maxfield, Pauline Oliveros, Phill Niblock, and James Tenney. In Europe, the music of Louis Andriessen, Karel Goeyvaerts, Michael Nyman, Howard Skempton, Éliane Radigue, Gavin Bryars, Steve Martland, Peter Michael Hamel, Henryk Górecki, Arvo Pärt and John Tavener exhibits minimalist traits.

Terrence Mitchell Riley (born June 24, 1935) is an American composer and performing musician best known as a pioneer of the minimalist school of composition. Influenced by jazz and Indian classical music, his work became notable for its innovative use of repetition, tape music techniques, improvisation, and delay systems. His best known works are the 1964 composition In C and the 1969 album A Rainbow in Curved Air, both considered landmarks of minimalism and important influences on experimental music, rock, and contemporary electronic music. Subsequent works such as Shri Camel (1980) explored just intonation.

Raised in Redding, California, Riley began studying composition and performing solo piano in the 1950s. He befriended and collaborated with composer La Monte Young, and later became involved with both the San Francisco Tape Music Center and Young's New York collective, the Theatre of Eternal Music. A three-record deal with CBS in the late 1960s brought his work to wider audiences. In 1970, he began intensive studies under Hindustani singer Pandit Pran Nath, whom he often accompanied in performance. He has collaborated frequently throughout his career, most extensively with chamber ensemble the Kronos Quartet and his son, guitarist Gyan Riley.

Stephen Michael Reich (/raɪʃ/ RYSHE; born October 3, 1936) is an American composer best known as a pioneer of minimal music in the mid to late 1960s. Reich's work is marked by its use of repetitive figures, slow harmonic rhythm, and canons. Reich describes this concept in his essay "Music as a Gradual Process" by stating, "I am interested in perceptible processes. I want to be able to hear the process happening throughout the sounding music." For example, his early works experiment with phase shifting, in which one or more repeated phrases plays slower or faster than the others, causing it to go "out of phase." This creates new musical patterns in a perceptible flow.

His innovations include using tape loops to create phasing patterns, as on the early compositions It's Gonna Rain (1965) and Come Out (1966), and the use of simple, audible processes, as on Pendulum Music (1968) and Four Organs (1970). Works like Drumming (1971) and Music for 18 Musicians (1976), both considered landmarks of minimalism and important influences on experimental music, rock, and contemporary electronic music, would help entrench minimalism as a movement. Reich's work took on a darker character in the 1980s with the introduction of historical themes as well as themes from his Jewish heritage, notably Different Trains (1988).

Julius Eastman (October 27, 1940 – May 28, 1990) was an American composer. He was among the first composers to combine the processes of some minimalist music with other methods of extending and modifying his music as in some experimental music. He thus created what he called "organic music". In compositions like Stay On It (1973), his melodic motifs were not unlike the catchy refrains of then pop music.

He studied performance and composition in New York and contributed to new music scenes in New York, Buffalo, and Chicago, touring and recording as a performer and enjoying many performances of his own music. As a conductor, musician, and vocalist, he had a close artistic relationship with Arthur Russell and worked briefly with Meredith Monk and Pierre Boulez. His voice is that of Peter Maxwell Davies' Mad King on Nonesuch Records. He worked in a variety of musical styles, including classical, jazz, and crossover.