Four floppy drives plus MIDI-tone Toccata and Fugue equals Castlevania flashback.
YouTube’s spankin’ new innerwebz star, FunToTheHead, has rigged up a system comprising “two 3 1/2″ drives and two 5 1/4″ drives connected to a PIC18f14k50 microcontroller. It interfaces to any MIDI source via MIDI over USB. Straight MIDI would also be possible with an additional small circuit and some minor firmware changes. This initial version can respond to all 128 MIDI notes, and pitch bends +/- 2 semitones.” It works best when compositions are manually arranged, but can read MIDI files with “acceptable results”.