The orchestra consisted of 16 MIDI-compatible grand player pianos, provided by the Gulbransen division of QRS Music, and three xylophones, four bass drums, a tam-tam, a siren, and three "airplane propellors," all controlled by MIDI, using robotics built by the League of Electronic Musical Urban Robots, under the direction of Eric Singer.

The installation ran on the Mezzanine of the museum's East Wing, and was visible at all times. At 1:00 and 4:00 pm on weekdays, and at 1:00 pm on weekends, a Macintosh G5 computer running Mark of the Unicorn's Digital Performer software sprang into action, and played a 10-minute version of Ballet mécanique. The Mezzanine is in a huge glass-and-brick-enclosed atrium, so the sound was incredible.

For more information on the Gallery's exhibits, click HERE.

A photo scrapbook of the installation by Other Minds' Charles Amirkhanian is here, and a scrapbook from NPR's Gail Wein is here.

Eric and Paul presented a paper and showed video of the installation at the New Interfaces for Musical Expression conference in June in Paris, and again at the Audio Engineering Society conference in San Francisco in October.