Prelude and Fugue in C-sharp minor, BWV 873

Prelude and Fugue in C-sharp minor, BWV 873, is a keyboard composition written by Johann Sebastian Bach in 1738. [1] It is the 4th prelude and fugue in Book II of The Well-Tempered Clavier.

Incipit of prelude
Incipit of fugue

Prelude

The prelude is in the time signature of 9/8 time. It is in the key of C-sharp minor. The Prelude is heavily ornamented with mordents and appoggiaturas.[2]

Fugue

The fugue is in 12/16 time. It is also in C-sharp minor. Unlike its prelude, the fugue does not have much ornamentation.[3]

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gollark: Observe, filtering.
gollark: I'm messing with image processing. By multiplying that mask with the (shifted) FFT of an image, I can effectively make a"low pass filter" thingy. I should probably find some actual educational material on this instead of just tweaking a badly written python program.
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gollark: What? Unlikely, pyrobot.

References

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