Jazz, Anybody?

I may play the tuba, but I still am in my school's jazz band.

I decided to make this piece after listening to the countless jazz scores here on Flat, and they all sound so good. After weeks of working on it, I finally had something I was proud of. Thanks to all my friends to whom I sent the WIP versions. I was a little obsessed, and I apologize for that. Enjoy my first jazz composition!