Chopin consistently used a ternary (ABA) form for his Impromptus, despite the genre's name suggesting freedom.
The title 'Fantaisie-Impromptu' for Op. 66 was given by Julian Fontana, who published it posthumously in 1855.
Schumann believed Chopin was the first to introduce the 'Ballade' into instrumental music, a genre inspired by literary forms.
Chopin's Fantaisie-impromptu, Op. 66, was composed before his other Impromptus but was not intended for publication by him.
The Impromptu is a genre whose creation is often attributed to Chopin, though Schubert had already written similar pieces.
Aleksander Michałowski, a pianist, learned Chopin's performance secrets from Karol Mikuli, who was Chopin's student and assistant in Paris.
