Bach expands the usual 4-measure ground bass to 8 measures, and at one point the explicit theme departs, though it is hidden in arpeggios, one
variation in contrary motion, the next in parallel motion; the implicit harmony is there, but if you circle the notes, you can find them hiding all
over the keyboard, Cheshire-cat-like. Just when you think he might have exhausted all possibilities, he piles another variation on, the most virtuosic
of which is a series of triplets in the right and left hand against the theme in the pedal. He then proceeds to use the first four measures of the
Passacaglia theme in a well-thought out fugue, which is introduced with an appropriate counter-subject.
Pedal Harpsichord designed by James Pressler - Samples by Brett Milan
- Passacaglia and Fugue for Pedal Harpsichord, BWV 582
Audio track was created with Hauptwerk v. 1 software
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