There is nothing I regret more in retrospect than the sale of my old 128, it must be the dumbest I've ever done.
I had a 1571 as well and i remember a demo or something like that played a song with the disk drive. I just tested it a few times because i was afraid it would damage it, heh. I think it was the readhead which produced the sound, it was at least something mechanical inside the disk drive.(And I'm pretty sure that i have not seen too much digital acid).
Does anyone else remember it and know if there is a video from this thing?