Donny,
Bellson was one of the first big time drummers to use the double base setup. At the clinics he would amaze everyone with what he could do with them. I think the first time I met him was in 1962 or 1963 in New York - I think it was at the famous Birdland club. Phil Woods was one of his sidemen. Don't remember who the other players were.

If you want to hear some really good jazz find one of Bellson's sextet albums -- good stuff. In fact, I think he has a Birdland album recorded live.

Hammer