I stumbled across this on YouTube. Some very insane and clean playing by several instrumentalists, euphonium and tuba included. The graphics and such might be a bit over the top, but have you ever heard the triple tonguing variation played this cleanly on a trombone. Ditto for the tuba solo variation. And we all know how well Matonizz plays.

https://www.youtube.com/watch?v=jVY3TW_jCRA