Student or Learner
Trying to write on the piano is difficult for me.
--- Does it mean that someone has difficulties with playing the piano?
"Writing for the piano" is the usual phrase for composing music for the piano.
"I wrote this piece on [or at] the piano" means, usually, that it was composed while sitting at the piano.
On the other hand, musicians also say things like "I mostly write on the piano, it seems, these days", to mean that they create piano compositions in general, without specifying where they are when they are doing it.
Your sentence, then, is the complaint of someone who either finds it difficult to compose piano music, or, possibly, prefers to work away from piano when composing. It is not specifically a complaint that playing the piano is hard.
Last edited by abaka; 21-Jan-2009 at 00:14. Reason: added [or at]