Here's a site that has the five hardest pieces and a video of one that is supposed to be THE hardest.
Five Most Difficult Piano Pieces (Classical) | Pianist Corner ...
Here's a site that has the five hardest pieces and a video of one that is supposed to be THE hardest.
Five Most Difficult Piano Pieces (Classical) | Pianist Corner ...
My vote is for the cadenza ossia from Rachmaninov's Piano Concerto No. 3. It's so difficult that Rachmaninov composed a simpler version of it that many pianists perform today. But the original sounds better:
Beethoven
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