content: This is a great buy for any Trombone player who is interested in Jazz. JJ is widely considered the greatest jazz trombone player of all time, and uses soe magnificent slide work. Kai on the other hand is great in his own right. His sweet, smooth style souds great and I personally enjoy his playing more than JJ's because I like to listen to the smoother style. All in all this is a great cd and the only thing that could make it better would be the addition of a supporting brass section in addition to the rythym which is already there.