C-sharp minor
Frédéric Chopin often wrote in this key: examples include the Fantaisie-Impromptu, Études Op. 10, No. 4 and Op. 25, No. 7, Scherzo No. 3 (Op. 39), Waltz Op. 64, No. 2, Polonaise Op. 26 No. 1 and Nocturnes No. 7 (Op. 27, No. 1) and No. 20 ("Lento con gran espressione"). More examples of works in C-sharp minor include Rachmaninoff's Prelude in C-sharp minor (Op. 3, No. 2), Scriabin's Étude in C-sharp minor, Op. 2, No. 1 (Scriabin), Franz Liszt's Hungarian Rhapsody No. 2, and Tchaikovsky's Piano Sonata in C-sharp minor.