Alvin Lucier (born May 14, 1931) is an American composer of music and sound installations exploring acoustic phenomena, especially resonance, as well as a former member of the Sonic Arts Union along with Robert Ashley, David Behrman, and Gordon Mumma. As a self-acknowledged composer of experimental music, Lucier's compositions sometimes deal with elements of indeterminacy. Much of his work is heavily informed by science, revolving around the physical properties of sound itself: resonance of spaces