The sax player doesn't seem to be part of the group that's playing behind him. I think cropping the picture to get rid of the other players would have made this better.
Composition is a little all over the place. Usually not a good idea to place someone on the edge of the shot looking out of it, it leads the viewer's eye out of the shot. Overexposed. If you're going to include the headstock of a double bass, don't chop the end off!