This is a very nice portrait and suits the challenge well. It would be nice, I think, to see a bit more of his surroundings though to show him more in his element playing his sax.
Wow, I really like it. It's how the subject falls into the background that makes it a beautiful photo. The golden saxofon and the look of the man is also very good. You could have pointed the camera a little bit lower to get the end of the saxophone to make it a perfect photo.
Great composition. Your subject is interesting and looks as one with his instrument. The dark suit goes fantastically with the black background. Your title let's us no he's in his environment though it's too dark to see which is OK with me. The border finishes off this shot very nicely.