Also a Music nut:

http://www-cs-faculty.stanford.edu/~uno/organ.html

The organ is really one of the first computers, actually. It takes in an input and based on your function which you switch on and off, transforms it (make my sound sound like flute, make my sound sound like chorus). I would love to visit this man's home as I hear Knuth has a killer home organ. Neat guys! Being a musician before hacker, I now feel less of a fraud. :)