Postmodern music often challenges traditional notions of form, structure, and genre, embracing experimentation and eclecticism.

Polystylism refers to the practice of combining elements from different musical styles and genres within a single composition.

Brian Eno is a British musician and producer who is known for his pioneering work in ambient music and his use of collage and sampling techniques.

Found sound refers to the use of pre-recorded or existing sounds, such as environmental noises, spoken words, or mechanical sounds, as musical material.

John Cage is an American composer and artist who is known for his use of chance operations and indeterminacy, as well as his exploration of non-traditional musical forms and instruments.

Intermedia refers to the blending of different art forms, such as music, visual art, dance, and theater, within a single work.

Steve Reich is an American composer who is known for his use of minimalist techniques, repetitive patterns, and phasing in his music.

Electroacoustic music refers to music that combines acoustic sounds with electronic sounds or that is created entirely using electronic means.

Meredith Monk is an American composer, performer, and choreographer who is known for her use of extended vocal techniques and experimental vocal sounds in her music.

Postmodern irony refers to the use of irony, parody, and satire in postmodern art and music to critique and subvert traditional conventions and values.

Harry Partch was an American composer and instrument builder who is known for his use of found objects and everyday materials, such as glass bottles, metal pipes, and wood, to create his own unique instruments and musical compositions.

Free improvisation refers to the practice of improvising music without any predetermined structure or plan, relying on spontaneity and interaction between the performers.

David Tudor was an American pianist and composer who is known for his work with John Cage and his use of collage and sampling techniques in his music.

Graphic notation refers to the use of non-traditional symbols and graphics to represent musical ideas and sounds, rather than using standard musical notation.

Pierre Schaeffer was a French composer and engineer who is considered one of the pioneers of musique concrète, a technique that involves the use of recorded sounds and tape loops in music.