Hmmm.... looking at the score... i hope no-one has asked this before, but why is the f sharp in the key signature the one above middle C rather than the top line? I've never seen a piece that does this before... was it used only by Alkan? Or in France at the time? Can't be because I heard that Alkan lived next door to Chopin, and Chopin didn't do it... at least I didn't think he did. Or is that only because there have been so many reprints of his music that this notation has been lost, and Alkan is less-printed so has kept this?
I never noticed it until i tried playing the first movement of the Sonate and it keeps catching me out cos I think about the key, but the signature doesnt match up, but ho yes it does!!!
Tom