ORGINAL BY WOODENTOASTER!
https://www.youtube.com/watch?v=2z5eizH0u1I

MP3:
http://dl.dropbox.com/u/18150524/beyondhergardenfloppy.mp3

Thank you all for your comments. Btw i hate these stupid little horses!

and here you can see the circuit:
https://www.youtube.com/watch?v=LE9P0Ahtcc8
it is controlled by AtTiny2313 and 4 shift registers (3xSIPO 1xPISO)
there is also max232 for converting voltage levels from COM port, and uaa2022 for driving led display, but the display is just for fun.