Hardest piece you know?

For me it would have to be Liszt's Hungarian Rhapsody No. 12 in C# minor. I started learning sophomore year in high school and finished in by the end of my senior year. What a year! Defenitely my favorite piece and most difficult that I can play. Very emotional piece as well, so it's very straining on my mind after I hit the last chord with a fortissimo.

EDIT: It's for piano

Oh, this is intresting. I've got an etude that's HARD, but it's far from impossibly hard. Hm.... no idea I'll come up with something once I find anything

Etudes are supposed to be hard

The hardest piece I've ever tried is Grieg's piano concerto. It's really the edge of what I can do with my piano. Although there are many other, harder pieces. I can't think of any harder pieces than Stravinsky's Firebird suite for the moment.

i can't play it obviously, but Arkady Volodos' concert paraphrase on Mozart's Ronda alla Turca is extremely hard. The second half anyway.

Some of Scriabin's piano sonatas require absolutely sick technique...

Hardest Piece, I've played so far - Op.53, Sonata in C Major "Waldstein" - Ludwig Van Beethoven.

For piano, anything out of Czerny 740 is insane. I mean, sure, I can play. But I will NEVER reach the required tempo, and I am still in high doubt if anyone can. Seriously, sixteenth notes at 108 HALF NOTES per minute?

The Berio sequenzas... if you mean to play exactly what's written... are damn near impossible

I can't recall who wrote it, but there was this one piece I played that was a Trumpet solo with Piano acc. called Grand Russian Fantasia. I have the .MUS if anyone wants to view the solo portion, but that was definately the hardest piece I have played.

Currently it is Concertino for Marimba and Orchestra by Paul Creston. I don't think it's that hard, but everyone else does. Tchaikovsky's Dance of the Jesters isn't that hard, persya, but it's frickin flying. I had a xylophone run with the clarinets of 16 measures of 16th notes at like 196 bpm. In the key of C. Which sucks on xylophone.