Suggest artists who incorporate live recording and playback into art music

[Moseph]

I'm thinking about writing a piece in which a computer is used to record an acoustic ensemble as it plays and then blends the playback over loudspeakers (with effects and such) with the ensemble -- conceptually, it's basically a glorified loop pedal. All done live, of course. I know that this sort of thing is not uncommon in popular music, but I was wondering if anyone's aware of any people who are doing this specifically in a classical or art music context. I'm looking for examples to pattern my own work after, and I'm drawing a blank.

[Patrick Burns]

funny you should ask, since I just posted this elsewhere:

http://igor.richmond.edu/3p/ (also check back on previous years)

http://www.ircam.fr/?L=1

http://www.youtube.com/watch?v=DHNTwFjxNP4