A successful allabreve
fugue is that from the Prelude and Fugue in C minor
, BWV546. The prelude to which it is attached shows signs of dating from at least 1730, around which time Bach was showing an interest in the da capo principle in his organ works (the first page of this powerful prelude is repeated to close it). The richness, especially, of the triplet figuration, and the ritornello form, also point to the composer’s mature Leipzig years.
from notes by Robin Langley © 1993