Kauffmann has written a two verse chorale Es ist das Heil uns kommen her. In verse A, you will hear a 3 voice chorale with the cantus firmus in the soprano. The lower two parts play dialogues and duets with each other. I play with the following registration: Gedackt 8', Quintadena 8' and Spitzflote 4'.
Verse B features a Bicinium. The tune is in the soprano played by Vox Humana 8' and Octav 4' and the jumping bass - Dulcian 16'.
I'm playing this piece using Altenbruch sample set by Sonus Paradisi of Hauptwerk VPO. If you like my music making, you can support me on Patreon and get free organ CD's at https://www.patreon.com/secretsoforganplaying
Our Hauptwerk setup: https://www.organduo.lt/tools.html
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