"Der Doppelgänger" by Schubert. Oh no I see you mean advanced, then try "Der Feuerreiter" by Hugo Wolf, that one is really very advanced.
Logged
"An Artist..is born with a mania to complete himself, to create himself. He is so multiple and amorphous that his central self is constantly falling apart and is only recomposed by his work" Anaïs Nin