The organ sonatas, BWV 525–530 by Johann Sebastian Bach are a collection of six sonatas in trio sonata form.
Each of the sonatas has three movements, with three independent parts in the two manuals and obbligato pedal.
The collection was put together in Leipzig in the late 1720s and contained reworkings of prior compositions by Bach from earlier cantatas, organ works and chamber music as well as some newly composed movements.
Commentators have suggested that the collection might partly have been intended for private study to perfect organ technique, some pointing out that its compass allows it to be played on a pedal clavichord. The collection of sonatas is generally regarded as one of Bach's masterpieces for organ.
They are also considered to be amongst his more difficult compositions for the instrument.
I uploaded part 1 separately before, but thought it better to upload the whole thing than part 2 and 3 on their own, for those, who would like to listen to or download the whole sonata.
These are the entry times for the different parts and the registrations:
Part 1: 00.00 min.
HW: Oct 8, Rohrfl 4
OW: Gedackt 8, Fl 4
Ped: Subb 16 Oct 8
Part 2: 05.48 min.
HW: Gedackt 8
Rückp: Quintadena 8, Trechterregal 8
Ped: Subbas 16
Part 3: 11.20 min.
HW: Quint 16, Gedackt 8, Oct 4, Oct 2, Trommet 8
Rückp: Princ 8, Rohrfl 8, Oct 4, Waldfl 2, Siefl 1 ½, Dulcian 16
Ped: Dulcian 16, Octav 8