human
You may state that the theme of the Passacaglia was the composition of the French organist André Raison. To which M. Widor adds:
gpt
André Raison, organist of St.-Étienne du Mont in Paris at the time of Louis XIV, left a volume of organ works, now very rare, which I have presented to the library of the Conservatoire. Raison's collection is interesting, in that it gives indications of the registration of his time; the chorale is usually found in the pedal, treated as the tenor, the real bass being played by the left hand. The melody of the chorale is performed upon a reed stop in the pedal, while upon the manuals only mixtures are drawn.