Steve Sykes is an amazing virtuoso tubist. He has great tone, wonderful technique, and a good sense of humor as he plays. He has a MySpace page with 4 full-length downloads of his incredible playing:
Steve Sykes MySpace Page
In listening to Czardas, I couldn't keep track of the number of octaves he covered - impressive!
If you go to his website, you can learn more about him:
Steve Sykes' Website