[silence] Mozart Mix

[John Kennedy]

Forgive me if I have missed a previous query or discussion on this,  
but I don't seem to find one. Is anyone familiar with the work  
referenced as "Mozart Mix" of 1991 at the website below, for 5  
cassette players? (To be distinguished from "Rozart Mix".) Given its  
date I am wondering if it wasn't part of an event at a European  
festival Cage attended. While it might seem an obvious possibility, I  
was with him in Salzburg that June of 1991 for the Aspekte Salzburg  
Festival, but I don't recall it or see such a piece referenced in the  
festival program.  If anyone has any information on performance  
practice or history of this, or access to whatever the score may be,  
I'd appreciate it.

http://www.johncage.info/workscage/mozartmix.html

John Kennedy