Prelude and Fugue in C-sharp minor, BWV 849
Composition by Johann Sebastian Bach
The Prelude and Fugue in C-sharp minor, BWV 849, is a pair of keyboard compositions by Johann Sebastian Bach. It is the fourth prelude and fugue in the first book of The Well-Tempered Clavier, a series of 48 preludes and fugues by the composer. Wikipedia
Key: C-sharp minor