Impressive
It's a very smooth piece. The percussion couldn't have been better, quiet, and on the ride cymbal. The bass was what Jazz should be - a very authentic feel to the whole thing. The chord transition is exceptionally good.
I really can't offer much criticism, it was really sort of spot on. Nothing crazy brilliant :D but no problems either. However, I notice what seems to be a synth tone as your melody; if you switch that to a saxophone - Ohhh Lord, it would be magical.