Reunion and amplification

On Oct 26, 2011, at 7:47 AM, Matt Rogalsky wrote:

Perhaps this connects somehow with Reunion (also 1968), although in  
that collaborative performance the game players' actions were not  
amplified.

There were 8 channels of audio (amplifiers and loudspeakers) at  
Reunion. The loudspeakers surrounded the audience.  The actions of the  
2 chess players (Cage and the Duchamps) were those of making the moves  
in a chess game on an electronic chessboard of my design and  
construction, the 8 outputs of which were individually directed to the  
8 channels of audio amplification.  The chessboard has 16 inputs (it  
still exists at the John Cage Trust); at the first performance of  
Reunion, 4 collaborating composers each provided 4 inputs to the  
chessboard -- from their own compositions of electronic music.  The  
composers were Behrman, Mumma, Tudor, and Cross.  The moves on the  
chessboard selected audio signals from among the 16 inputs and  
directed those signals to the 8 individual outputs.

The chessboard could be described as a 16 input / 8 output matrix  
mixer.  See LC, "Reunion: John Cage, Marcel Duchamp, Electronic Music  
and Chess," Leonardo Music Journal, Vol. 9, pp. 35-42 (1999).