Waltz in C-sharp minor, Op. 64, No. 2 (Chopin)

The Waltz in C minor is a piano waltz composed by Frédéric Chopin in 1847, the second work of his opus 64 and the companion to the "Minute Waltz" (Op. 64, No. 1). Chopin dedicated this Waltz to Madame Nathaniel de Rothschild. 
It consists of three main themes:
The overall layout of the piece is A B C B A B. In an orchestrated version, it forms part of the ballet "Les Sylphides".