I feel that the Piano was drowned out by the Jazz, and there wasn't enough of a rhythm from the percussion. After the Jazz solo, I enjoyed the synthetic rhythm and I am glad to hear the piano is being a little more utilized. I feel that you did not venture enough from the same sounds. I felt like you kept repeating it and while that is nice, it is also repetitive and become a bit boring. I would suggest that next time, you break it up a little, don't be afraid to put a bit more creativity into it.
A small tip, I know this isn't seen in jazz much, but a violin can go a long way, as a back up to the Alto Saxophone. I would also suggest adding in a bit of trumpet to back up the Saxophone during it's solo, mostly to touch on the higher notes and make them a little more effective.
As I am repeating the song, I am finding spots where it felt like you were trying to pack to much into a specific spot. Breathe and relax. Jazz is supposed to flow, and be even, but your Saxophone was a little rushed. The Piano could be used to slow it down and the percussion, I would keep to a base or snare if at all possible, you'd be surprised how one or two details can change the over all piece.
I hope this was constructive and you take some of it to heart, You seem to have a great grasp, but there are some areas that need a slight improvement.