"[Regarding indeterminacy]"...I think this interest had to do with his interest in painting. He used to put sheets of graph paper on the wall, and work on them like paintings. Slowly his notation would accumulate, and from time to time he'd stand back to look at the overall design. For him it had less to do with belief in chance: it was more function than anything else. He would talk about different weights of sound - and that was simply the easiest way to express them. Pitches didn't really matter, as there were so many other controls, and he used chance without its interfering with expression. What Cage admired in him and what they had most in common was heroism - trusting in performers, despite the risk that they might destroy the thing completely. Unless the performer committed himself to the pieces, they could be horrible, and it was their very dangerousness which made them so beautiful. Cage's were beautiful in the same way, just because you never knew what would come next." - Christian Wolff, Composer and Pianist"