He additionally used many extramusical (musique concrète) sounds in his art, such as alarm clocks, whistles, sirens, a section of common garden hose ("the black mystery pipes") and even primitive electronic sounds (before such things became commonplace).
He additionally used many non-musical devices, such as alarm clocks, sirens, or a section of common garden hose (dubbed "the black mystery pipes"). His studio recordings also used tape-manipulated "musique concrète", and primitive electronic sounds (before such things became commonplace).