The chorale prelude on "Nun lob mein Seel' den Herren" is a fugue on the opening phrase of the choral melody. No frivolous registration this time, just 8', 4', 2', or full organ. For this performance I choose the 'full organ'. It is a manualiter piece and to my ears it sounds very powerful and solid. To emphasize this powerful aspeect of the fugue even more I play the bass voice with the pedals. Curious about this fugue is that it has a repeat, but that no end is indicated. One could play it endlessly non-stop. Of course it has to end somewhere, and I indicated in the score the (to me) most likely spot where it should end.
The recording was done with the Hauptwerk software and the sampleset, made by Voxus, of the Müller organ in the Sint Bavokerk, Haarlem (http://www.voxusorgans.com/en/product/haarlem).
Score available here: http://partitura.org/index.php/georg-friedrich-kauffmann-nun-lob-mein-seel-den-herren