What are some really good pieces of classical music?

I recently discovered Beethoven's "Moonlight Sonata" and I really like it, an I was wondering if anyone could tell me anyother pieces of classical music that are like it? oh and btw please don't recommend "Clair de Lune" because I used to really like that song but Twilight kinda ruined... show more I recently discovered Beethoven's "Moonlight Sonata" and I really like it, an I was wondering if anyone could tell me anyother pieces of classical music that are like it? oh and btw please don't recommend "Clair de Lune" because I used to really like that song but Twilight kinda ruined it for me :(

Thankies!^_^
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