Compositions which give the impression of being improvised. At the time, public improvisations on a given subject were very fashionable.
Impromptu No. 1 in A-flat Major, Op. 29
Impromptu No. 2 in F-sharp Major, Op. 36
Impromptu No. 3 in G-flat Major, Op. 51
Fantasie-Impromptu in C-sharp minor, Op. 66