I think everything sounds pretty decent except where the piano is the solo instrument - then it's got a wooden characteristic to it/ too 'on-time'. Needs a bit more humanization. For example, the arpeggios on the right hand chords are dead-ringer quantized midi stuff. It's a simple enough part that I'd go into those particular sections and add some jazz to what's going on. A grace note into the top note of the first arpeggio in the phrase, a little swing, etc.

Once the 'bone solo starts, then I can begin to imagine people playing the instruments. The sax solo is particularly nice and hard to believe it's midi; at least to my ears. Perhaps the sax was one of the Real Tracks?

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