Musique concrète
Musique concrète (; ) is a type of music composition that utilizes recorded sounds as raw material. Sounds are often modified through the application of audio effects and tape manipulation techniques, and may be assembled into a form of montage. It can feature sounds derived from recordings of musical instruments, the human voice, and the natural environment as well as those created using synthesizers and computer-based digital signal processing. Compositions in this idiom are not restricted to the normal musical rules of melody, harmony, rhythm, metre, and so on. It exploits acousmatic listening, meaning sound identities can often be intentionally obscured or appear unconnected to their source cause.