Ex. 10-1: Prelude
Johann Sebastian Bach
Key: D♭/B♭mTime: 4/4Prelude and Fugue in B-flat minor (BWV 867)
No. 22 from Book I of Bach's Well-Tempered Clavier, compiled around 1722.
Beethoven transcribed the prelude and fugue for string quintet around 1801–02 as a counterpoint exercise. Villa-Lobos later arranged the prelude for cello ensemble.