Music + Floppy = Moppy
Moppy is a musical floppy controller program. By using an Arduino UNO as a translator, you can command an array of floppy drives with a musical keyboard. The head on each floppy drive is controlled by a stepper motor which will put out sounds when driven at the right frequency.
Here is a link to the Moppy project page.
Enjoy your musical floppy drives!