Original: Reger, Max. Choral-Phantasie über 'Ein feste Burg. Fantasy for Organ on the Chorale 'A Mighty Fortress is Our God'. Op.27. duet.
Oversettelse: Undertrykke din rating ', SHADOW, sant, DELAY, 0. 1 Piano, 4 Hands. duett. Lange, Richard Forlag. Leipzig. R. Forberg, 1915.