Prelude and Fugue in G minor, BWV 861

16 in Johann Sebastian Bach's Well-Tempered Clavier Book I, keyboard music consisting of 24 preludes and fugues in every major and minor key.

[1] The subject of the fugue employs a minor 6th leap in the first measure, then resolves it with a more conventional stepwise motion.

12 and a D dominant seventh on the fourth beat as we prepare to modulate back to G minor.

The penultimate measure begins with a pedal tone that last till the end of the prelude.

Finally, the dissonance is resolved and the piece ends with a Picardy third.The subject of the fugue begins in G minor.

The second voice enters on the pickup to the fourth beat of m. 2, and it begins in the dominant (D minor), even though the first note of the theme is a G in this instance.