The Musicians

John Cage 1947

Vittorio Rieti

http://www.rhapsody.com/ , with a download of their software, allows one to listen to the music on file there.

The two pieces presented at the Imagery of Chess show were:

Chess Serenade by Vittorio Rieti

Chess Pieces by John Cage

The pieces can also be heard at AllMusic.com
 

Chess Pieces by John Cage

The music, as performed by Margaret Leng Tan, can also be found on this album
The Works for Piano 7

"Also on this disk are one of Cage's most impressive prepared piano pieces, Sonatas and Interludes, and the only other score contributed to the original exhibit, Vittorio Rieli's Chess Serenade."
 

see also my stand-alone page on John Cage for more detailed information.