Maybe this is the right time to pimp my "Super Mario Bro's theme for laser engraver":

http://www.youtube.com/watch?v=Fq4VLwLFXaE

I'm very interested in the idea of electro-mechanical music. We've all heard machines playing human instruments and machines synthesizing sound, but very few machines built to be novel accoustic instruments in themselves.

If you haven't seen this yet, this is probably the best example of a hack like this that I've seen. It was submitted for a contest that radiohead held, and I believe was the winner (it takes about a minute to get rolling):

http://www.youtube.com/watch?v=pmfHHLfbjNQ

The sound of the scanner is pretty awesome.

And the original by radiohead in case you need some context.

http://www.youtube.com/watch?v=1ky1td3_6LY

http://www.youtube.com/watch?v=dmoDLyiQYKw phantom of the opera

direct link to the video: http://www.youtube.com/watch?v=X4SCSGRVAQE

Listen to Queen Bohemian Rhapsody Old School Computer Remix http://www.youtube.com/watch?v=Ht96HJ01SE4

What's a floppy disk?

Um isn't that the Imperial March?

This would be more ominous if it played All Along The Watchtower.

I did something similiar by switching on and off (with BASIC code) the relay in a BBC B, which turns the tape machine on or off. It kind of goes clickety click very rapidly.

Music coming out of an electric arc (no moving membrane).

http://www.youtube.com/watch?v=cEeWtBAE5LY

For some reason, I still have a stack of floppies in my closet. Looks like I found a potential weekend project :)

I've heard PCM audio through the PC speaker, it'd be interesting to try similar techniques with this setup.

So PC shipped with a floppy and a speaker only in order to be able to beep while loading? :)

It sounds like someone playing a Kazoo in the background whilst a floppy disk is filmed

Crazy hack done by someone with a lot of free time and discipline :D