Classical shiihs
Virtual choir

fragment of choir music created by singing into the laptop microphone and having the computer process the recorded sound with supercollider in real-time.

Excuses to the sensitive ears: the singing indeed is not entirely accurate - it takes some getting used to singing accurately if you don't have the expected feedback in your ears ;)

More explanation and downloadable code on a-touch-of-music.blogspot.be/2...your-voice.html