The Lives Of Others Movie What Is The Classical Piano Piece Played In The German Movie, "The Lives Of Others"?

What is the Classical piano piece played in the German movie, "The Lives of Others"? - the lives of others movie

I do not know the Sonata speak for a good man, but a piece that sounds like Schubert or Chopin. Please tell me, because of the small loans were read and could not have found.

This film deserves 5 1 / 2 stars!