Genius. I wonder if you could say that Cage plagiarised any of the following with 4:33: Beethoven's 10th Haydn 105 Mozart 41 Shostakovich 16 Tchaik 7 Prokofiev 8 Brahms 5 (not counting the Schoenberg orchestration of his Piano quartet that is essentially Brahms 5). John Cage was an idiot anyway. I've got no time for him. I don't know how you can say Tchaik was the greatest composer ever. But he did write one of my favourite symphonies. His 4th that is. And he definitely had a talent for orchestration, like Stravinsky, where you just know a piece had to have been written by him. The 1812 overture is just stupid though.