The beautiful music simply by utlizing eight old floppy disk drives. It's a completely awestruck by the sounds these eight floppy disk drives could make. Watch the disk drives play "Sandstorm" by Darude below.
Stepper motors in the floppy drives is making the sound. It's been done before, you can see other videos around Youtube of people doing songs with stepper motors, but the advantage to floppy drives is that the build is pretty uniform and most are easy to hear.