I learned the first part of K.331 "Andante Grazioso", and I was moving to the first variation. However, I am finding very huge difficulties in learning it, especially when I compare it with Moonlight Sonata (first movement).
Why am I finding Beethoven's sonata easier than Mozart's?
I really thought it would be the other way, so is there any technical reason? I am not referring to the expressiveness of the piece, just the technical part.