JS Bach Prelude and Fugue in e minor bwv548 Ronald McKean organist

Prelude and Fugue in e minor bwv 548 commonly known as the "wedge" due to the visual and auditory shape of the fugue subject.
Prelude and Fugue in E minor, BWV 548 was written sometime between 1727 and 1736, during his time in Leipzig. Unlike most other organ preludes and fugues of Bach, the autograph fair copy of the score survives, though the handwriting changes twenty two measures into the fugue to the hand of Johann Peter Kellner, a likely pupil and acquaintance of Bach who played an important role in the copying of his manuscripts. Because of the work's immense scope, it has been referred to as "a two-movement symphony" for the organ.
The recording was of the Silberman organ in the Freiberg Cathedral, Germany.