Roland Szentpali's Visions

[one.kidney]

I have a very curious question about Roland Szentpali's Visions. Everywhere i look, from recital lists including the piece to recordings of the piece, why does NO ONE include or play the 6th movement, Mephisto?? It seems like one of the funnest movements out of the work, so why does no one do it? Is there some secret rule in the tuba world that no one shall ever play it? Just curious. I find this REALLY odd.