Hardest piece you know?

I replied much earlier to this, when I was much less experienced. now I say :

The Etude Revolutionary by Chopin.

Fantasie-impromptu by Chopin.

I'm in the middle of learning the Revolutionary. Damn. It's rough.

Liszt's "La Campanella"

Paganini's original is hard as hell. I think more so than Liszt's piano version of it.

I can play some of Liszt's but zilch of Paganini's violin version

The Etude Revolutionary by Chopin.

*hollow laugh*

His first scherzo is WAY harder. As is, as we've established, La Campanella.

Your face is the hardest thing to look at in the history of mankind...

I'd say for traditional cello concerti Schumann is up there as the hardest pieces mainly for expression. Dvorak is very difficult and technically challenging but the sorrow that envelopes the entirety of the Schumann concerto is hard to reiterate effectively.

Hmmm.

I think the Jolivet bassoon concerto tops the list for me.