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

The Waltz in C♯ minor is a piano waltz composed by Frédéric Chopin in 1846–47, the second of the three waltzes of his Opus 64, and the companion to the "Minute Waltz". Chopin dedicated it to Madame Nathaniel de Rothschild.