Note 101 — THE PRELUDES AND FUGUES OF J.S. BACH TOCCATAS—FANTASIAS—THE PASSACAGLIA—THE SONATAS
Wallace Goodrich translation
P. iii, 3. B.-G. xv, p. 136.
[At the time of Bach it was a frequent usage to omit an accidental from the signature; in the above case the omission of the only flat undoubtedly suggested the appellation frequently given "in modo dorico," although otherwise the composition bears hardly a trace of the Dorian mode. Tr.]