John Cage's 4'33" as a free download on iTunes

…for this. The recording in question is Wayne Marshall not playing in an empty Henry Wood Hall in 1991, produced by the awesome Steve Long*. I guess the concept here is that, since there isn’t any crowd noise on the recording, you’ll provide it yourself. A sort of avant-garde music-minus-one, if you will. Quite predictably, the customer reviews are hilarious.

* who, along with Robert von Bahr of BIS, has one of the best beards in the classical music business.