Sound of Ice Melting, 1970. Installation of two twenty-five pound blocks of ice, eight boom microphone stands, eight microphones, mixer, amplifier, two large speakers and cables, dimensions variable, edition 2/3. Solomon R. Guggenheim Museum, New York, Purchased with funds provided by members of the International Director's Council in honor of Richard Armstrong, Director of the Solomon R. Guggenheim Foundation and Museum 2009.25 © 1970 Paul Kos. Installation view: The Third Mind: American Artists Contemplate Asia, 1860–1989, Solomon R. Guggenheim, New York, January 30–April 19, 2009. Photo: David Heald.