Neumeister's transcription of Bach's prelude to "Wo Gott der Herr nicht bei uns hält" contains surprisingly few errors. Perhaps because it is a piece with just three parts? Bach wrote a nice piece, with the chorale melody in the soprano voice. The accompanying two voices start of with the first phrase of the chorale melody, after that they have little relation with the melody.
The recording was done with the Hauptwerk software and the sample set of the Silbermann organ of the Stadtkirche Zöblitz by Prospectum (http://www.prospectum.com/index.php?language=english&id1=2&id2=8).
Score available here: http://partitura.org/index.php/johann-michael-bach-wo-gott-der-herr-nicht-bei-uns-halt