You can purchase the sheet music for John Cage's 4' 33" from Sheet Music Plus. It's $5.95 and that will be money well spent. (For those not hip to this challenging 1952 composition, it is a classic of avant-garde music in which the performer plays nothing for the duration of the piece.) "4' 33" sheet music (Thanks, Syd Garon!)
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David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.