Installation at 590 Madison Avenue, New York, New York . February 11-May 29, 2005 . Organized by the Whitney Museum of American Art and the Los Angeles County Museum of Art. Woven polyethylene, nylon net, cardboard tubing, various mechanical components. Dimensions variable. Photo by: Sheldan Collins / Courtesy PaceWildenstein, New York. © Tim Hawkinson, Courtesy PaceWildenstein, New York.

Twelve bus-size biomorphic balloons, each with its horn tuned to a different note in an octave, make up a walk-in self-playing organ. A 200-foot-long scroll of dots and dashes encodes a musical score of old hymns and pop classics.