Chopin, Fantasy-Impromptu in C-sharp minor, Op. 66 (1:48)

Frédéric Chopin's Fantaisie-Impromptu in C-sharp minor, Op. posth. 66, is a solo piano composition. It was composed in 1834 and dedicated to Julian Fontana, who published the piece despite Chopin's request not to do so. The outer sections of the piece, adhering to an allegro agitato tempo, take on an almost etude-like appearance.