Piano songs

does anyone here know the name of the songs used in this film?

I want the name of the main theme song thats played throughout most of the movie... its very eerie and creepy sounding...

and also the name of the song that the woman plays on her piano (the jewish woman they show in the film with her family who moves houses and then doesnt have her piano on her)... i think the song she plays might be by Chopin?

thanks