Many years ago, I met a very young pianist, Frederik [sic] Rzewski, and he said with the peace of mind available, he said, “You know that canon for two pianos?” Canon, me, my canon? Oh yes, that free-durational piece. It was a canon, I suppose. To tell you the truth, if I’d thought it was a canon, it would have caused me to commit suicide.
Morton Feldman, “Darmstadt-Lecture” from Essays