Prelude and Fugue in D minor, BWV 875

The Prelude and Fugue in D minor, BWV 875 is a keyboard composition written by Johann Sebastian Bach.

[2] The piece was originally composed as a moto perpetuo, probably inspired by Antonio Vivaldi.

The figuration is similar to that of a violin piece, particularly in an earlier revision of the prelude, Preambulum d-Moll, BWV 875a, which does not include the demisemiquavers in bars 22, 24, etc.

Despite this, the basic structure has remained the same: binary form, with the main theme restated in the dominant in bar 27.

They are later accompanied by the ordinary semiquavers of the countersubject, which make the fugue constantly switch between duple and triple rhythms, even more often than the D major prelude.