Johann Michael Bach is from other sources known to be the composer of the thirteenth choral in Mus Ms 30439. Several holes in the manuscript make that some notes had to be guessed. Where the last line of the bass voice should be, the paper is even cut off and torn. Note values can stil be seen, but the notes themselves are largely cut off. Luckily the notes can be filled in because the bass voice starts the theme in bar 33, and the rest of the notes just complete the harmonies.
The recording was done on the sample set of the Müller-organ in the Sint Bavokerk in Haarlem by Voxus Organs for Hauptwerk.