Frederic Chopin Fantaisie Impromptu in C sharp minor, Op 66

Frédéric Chopin Fantaisie Impromptu in C♯ minor Op. posth. 66 was composed in 1834 as were the Four Mazurkas (Op. 17) and the Grande valse brillante in E♭ major (Op. 18), and published posthumously in 1855 even though Chopin had instructed that none of his unpublished manuscripts be published. The Fantaisie-Impromptu is one of Chopin’s most frequently performed and popular compositions. Chronologically the first of Chopin’s impromptus, the Fantasy-Impromptu was not intended by the composer for publication.