Music for a jazz dance?

I really need some fierce, exciting, powerful music for a dance I'm choreographing. It's for a girls duet that is jazz/contemporary. It needs to be mostly fast, but I also really like music that changes tempo, sounds, etc. throughout. The song doesn't necessarily have to have words, really anything's fine. I'm open to anything you suggest! These are very talented girls that I want to give a challenging piece to, and to do that I need some really great music! Thank you! :)