Impromptu No. 2 (Chopin)

The impromptu begins with a nocturne-like atmosphere.

Deep bass notes cue a passionate section, which is then followed by a lighter section with quick runs.

The nocturne-like atmosphere returns, and the piece ends in a passionate F♯ major chord.

[1] The piece is in the rare key of F♯ major, which is used in very few major compositions in the Romantic era outside of piano music.

Larger examples of works in this key are Ludwig van Beethoven's Piano Sonata No.