Block 7 of A214 9 Evenings remarks by John Cage (Q23787)

My own project is simple to describe. It is a piece of music, Variation VII, indeterminate in form and detail, making use of the sound system which has been devised collectively for this festival, further making use of modulation means organized by David Tudor, using as sound sources only those sounds which are in the air at the moment of performance, picked up via the communication bands, tel...