Very nice!
Sounds very nice altogether, especially the own saxophone melody you added! :)
Mh, the only things that were not as great as in the original were the bass tones, they gave a cooler feeling in the normal version. If you listen to the original and concentrate on the bass tones only, you might notice that a few important tones are used that you didn't use. Unfortunately I'm not good in notes and so on, but in the part where all the tones get higher, there I see where the bass could be changed. I played the game so often when I was a kid so I know about the bass. XD
I hope you know what I mean and I could help a little tiny bit. :D
9/10| 5/5|