My Sousaphone Solo-Tell Me What You Think

[SousaWarrior9]

http://www.youtube.com/watch?v=vGuBac6H_pU" target="_blank" target="_blank

Tell me what you think...
The sound/picture quality isn't the best ans the video started a couple of seconds in to the song, but you still get the idea.
I wrote this song because I was inspired by Nat McIntosh. His display of multiphonics and sound effects is amazing, so I thought I'd try it for myself (of course, he's actually playing in the extreme high register, while I'm just singing, but it sounds about the same)
I'd been playing his solo 'The Warrior Comes Out to Play' for a while and I thought it was time to see if I could come up with something similar.
I won't be offended by any comments telling me to improve on anything (unless you're just being a jerk about it) so please feel free to comment on any issues you notice.
The most common thing I've heard so far is I need to open up my mouth to make my tone more open, which I'm working on.

[The Jackson]

This is really great, man. As you can hear, the squealing really got the crowd going. You're playing is pretty good and I can dig the tune you wrote. Keep it up!

[tubatooter1940]

Yeah, baby.

[SousaWarrior9]

Thanks a lot! I'm glad you all like it!