I play the piano, and I'm looking to find some more classical songs that are a nice mixture of fast, loud, and soft. Currently, I am playing Tchaikovsky's February and Rachmaninoff's Prelude in G Minor. I'm trying to learn as many "difficult" classical songs by summer for a music camp. If you have any opinions, please share. Also, maybe songs that are not too popular like Moonlight Sonata and Liebestraum.