I’m not sure if this is an April Fool’s joke from iTunes or not, but you can download John Cage’s “4′33″” for free. If you are not familiar with the piece, it is actually more of an art/concept piece than music - basically it’s 4 minutes and 33 seconds of silence, with the “music” being whatever noise you hear around you during that 4 minute and 33 second period of time. The idea of it is loved and hated by seemingly an equal number of people, yet there is no denying the fact that somebody had to do it at some point.