I used to work with dot-matrix printers, and anyone who has heard them print can’t help but think they sound rhythmic, perhaps even musical. Paul Slocum certainly thinks so. He’s modified some Epson LQ-500 printers with reverse-engineered firmware to turn them into dot matrix synths.

The music comes from the vibration of the motors, the firing of the pins against the paper, and the printer’s error beeper. Best of all, it even prints while doing so. Check out the web site for details and MP3s.