I've had this song for about 3 years now and I still don't know who plays it. It's a jazz-rock instrumental. The whole song is about 12 minutes long, but I cut it down and here's a link to an mp3 with the first minute of the song:

http://www2.bc.edu/~sthilama/who_is_this.mp3

I'd love to know who plays it, so I can go buy some more of their music. It's a great song.