The one thing John Cage is remembered for more than anything else is sitting silently at a piano for four minutes and thirty-three seconds and calling that a composition. He titled it 4’33”, of course, and I have seen it reproduced as sheet music (“…rest…rest…rest…”), heard it “covered” by various artists who did everything from generate pure binary zero files on a CD to simply put a mike in an empty room, and so on. I even had the pleasure of watching Professor Bullough of my 20th Century Music class perform it live. Sort of.