Do you know of a recording online of the nastiest version? The version I know of is difficult enough as it is.
Here are the pieces by Liszt and Chopin that I have learnt in the past or are currently learning:
Liszt: Liebestraume Nos 1 and 3.
Chopin: Nocturnes Op 9, Nos 1 & 2; Op 27, No 2; Op 48, No 2; Op 72, No 1
Etudes Op 10, No 3; Op 25 No 12. Ballade No.3.
Other works I have not really played, although I have a fairly good idea what they sound like.
Thanks.