I was struck with yet another of my many myriad musings just now. I was listening to the under appreciated metal band Mudvayne, as The Bassist's technicality astounds me, and I was struck with another question among my normal thread of thought. I am at a point of my life where I privilege those instrumentalists that also double as vocalists.
Understanding that, what would you view as the most insane piece for a multiposition performer to sing and play? I mean by that, that the selection must exhibit a great challenge to perfect and to become proficient in, in the discipline of elusively the instrument in question, and, in an ideal world, would also require a lot of vocal technical exhibition on top of the insanity of mastery of the piece on the instrument in question.
If you were to create a hell for a performer, and demand such a song be performed in such a way, what song would it be, and specifically where would the vocalist be put for maximum sadism?