Ach Herr, mich armen Sünder (Georg Friedrich Kauffmann)

The original registration of this two-part chorale prelude is quite peculiar - Fagott 16', Quintadena 8' and Spitzflote 2' on the Ruckpositiv and Vox humana 8', Gemshorn 8' and Spillpfeife 4' on the Oberwerk. In the first part the choral melody is placed in the bass part and in the 2nd part it moves to the soprano. Let me know what you think!