. . "Fantasia Impromptu" . . "Fantaisie-Improptu" . "Fantaisie-Impromptu in C Minor" . . . "Fantasie Impromptu" . "Impromptu No. 4 in C-sharp minor, Op. 66 \\\"Fantaisie-Impromptu\\\"" . . . "Impromptu No.4 in C sharp minor, Op.66 \\\"Fantaisie-Impromptu\\\"" . . . "Fantaisie Impromptu Op.66" . . . "Op. 66" . "Chopin" . . . . "Fantaisie - Improptu" . . "Fantaisie-Impromptu in C minor" . "Fantaisie-Impromptu" . "Fantaisie Impromptu" . . . "Fantasie Impromptu in C-sharp minor, Op. posth. 66" . . "Fantaisie-Impromptu in C-sharp minor, Op. 66" . "Fantaisie-Impromptu" . . "Fantasy-Impromptu in C-sharp minor" . . . . "Fantaisie-Impromptu (in C minor)" . "Fantasy-Impromptu in C-sharp minor, Op. 66" .