This is interesting, for sure. It's hip hop, but you've got melodies that span the whole track and prevent this from being one big sound loop. In that sense, this really is a fusion of jazz and hip hop, rather than hip hop sampling jazz. The thing that annoyed me a bit and got redundant fast was the rhythm (or lack thereof) of the piano chords. It's clear you put the most forethought into the saxophone, to the detriment of the other instruments (this is fine for drums since it is hip hop, but really shows with the same few chords over and over.)