Monkey Business No. 29 (Warhol, Lichtenstein, 1972). 2009 by Andrew McNiven published on 2011-07-22T06:13:34Z Monkey Business No. 29 (Warhol, Lichtenstein, 1972). 2009 CD player, amplifier, four speakers, looped ambient sound recording made in Room 15 of the Museum of Modern Art, 11 West 53rd Street, New York, (demolished 1979) June 17th 1972. Works by Andy Warhol: Untitled (Electric Chairs). 1971. Roy Lichtenstein: Brushstrokes. 1967. (Sound recording courtesy of Mark Tauman, Chicago) Gallery information label, perspex.