A musical greeting to Markus:
I liked your performance of this chorale prelude very much!
Harmonically an absolute masterpiece: in bar 8 an E minor chord is followed by a cadential C major seventh chord, the root remains in the pedal and becomes the seventh of a D major chord - so the game goes on, the blended sounds don't want to dissolve - then on the last eighth of bar 9 the redeeming A major chord ..... Bach was generations ahead of his time.
Now I have also recorded this piece on my favorite organ for the pieces from the organ booklet. We hear 2 verses, the second with the full organ of the parish church at Lochtum in the Harz Mountains.