Hey you saxophone people...
There's a composer by the name of Williams Kraft, I'm currently playing a piece called Encounters II for solo Tuba. He composed around eleven Encounters. Encounters IX is from A.S. and Percussion. I would suggest checking it out. His Encounters are known to be very demanding. The one I'm playing basically has everything I can possibly do on a tuba within an 8 minute time-span. I think it's worth a look....
Enjoy!
Enjoy!