I love classical piano. I've been playing the piano since I was 4 years old, and just can't get enough of it.
Here is one of my favorite pieces. "Un Sospiro," from "Trois Etudes" by Franz Liszt, as performed by Marc-Andre Hamelin. When translated, "un sospiro" means "the sigh."
I remember sitting at my piano for hours one night and crying when I first learned this piece because of the difficulty. It was a pain to learn, but well worth the trouble.