Frédéric Chopin's Impromptu No. 2 in F-sharp major, Op. 36 was composed in 1839 and published in the following year.

Music

The Impromptu begins with a nocturne-esque chord. The piece is in the less commonly used key of G-flat major, which is used in very few major compositions in the Romantic era, such as, enharmonically, Ludwig van Beethoven's A Thérèse sonata and Chopin's famous Barcarolle.

References

Huneker, James (1909). Chopin: the man and his music. New York: C. Scribner's Sons. pp. 239–240.