A scientific musical instrument called a Floppotron is comprised of 64 floppy disc drives, eight hard disks and two optical scanners.
The noises are attributed to the motors running at different speeds, according to the inventor of the music, Pawel Zadrozniak.
Aside from the Toto tune, the Floppotron can also play classic tracks by Yes, ELO, Lynyrd Skynyrd and Survivor.
There's an entire Floppotron channel on YouTube.
You should have your listeners do their best robot impressions and call in to provide lyrics, right?