Oorspronkelijk: Bach. The Art of the Fugue, BWV 1080, Part 2 - Contrapunctus XV, Canon in Augmentation and Inversion. Complete Works for Organ. Bach.
Vertaling: Beek. Fantasie. De Kunst der Fuge, BWV 1080, deel 2 - Contrapunctus XV, Canon in Augmentation en Inversion. Versie 2.0.