Very nice! I really liked it! Very smooth but with a constant suspense.
I would like it a bit more quantized though, it's a bit too loose. This adds to the realism but any decent player (by all means, I don't suggest that you're not good) will probably play tighter to the tempo.
Also I think that a little compression to bring the overall mix a bit front will be nice. Add a touch to the low brass, they are somewhat undefined.