I'm up waaaaayyyy too late, but I thought I'd share an experiment I did tonight with real-time multitracked theremin. I ran 1 theremin into Cakewalk Sonar X2, split it into 3 tracks, ran each through a formant filter, pitch-shifted two of them down (1 octave, and a minor third above that), then added some cathedral reverb.
https://soundcloud.com/thereminworld/choirmin-short-sample
It's just some gibberish, but perhaps inspiring to someone out there :)