Prelude and Fugue in B-flat major, BWV 866

The Prelude and Fugue in B-flat major, BWV 866, is a work of music for keyboard by Johann Sebastian Bach. It is the 21st prelude and fugue in the first book of The Well-Tempered Clavier, a group of 48 preludes and fugues.

 References 

Category:The Well-Tempered Clavier
Category:Compositions in B-flat major