Check this out record from polish tuba player recital and his piece Crazy Fly
I think this is one of the most difficult piece for tuba ever
https://www.youtube.com/watch?v=kdKujOZ ... ture=share" target="_blank" target="_blank
Here you can read soething about Krzysztof at Melton website
http://www.melton-meinl-weston.com/en/a ... ztof-mucha" target="_blank