Bach: WTC 1, Prelude and Fugue in B major

First let's hear this short and sweet pair on the harpsichord with Diego Ares:

 

Unfortunately there does not seem to be a good performance of this piece on piano with the score. We do have a Richter recording, however:

The prelude is a miniature masterpiece based almost entirely on this tiny turn figure:

That's pretty much the whole prelude except for a couple of sequences.

The fugue subject is fairly typical: its most distinctive feature is the trill at the end:

You might also notice that the first four notes of the prelude motif and the first four notes of the fugue subject are the same pitches. This is a fairly typical fugue with quite a few entries and short episodes. A couple of the entries alter the ending of the subject by dropping the trill and shortening that note. As the rest of the subject remains the same I don't think we need call them false entries, however. About halfway through the fugue the subject appears in inversion:

This changes the harmonic context so that this and the subsequent answer, also in inversion, omit the trill. No strettos in this fugue. The prelude and fugue together are barely over three minutes. As I said, short and sweet.