Kauffmann's first prelude on "Valet will ich dir geben" calls for a combination that I by now consider as 'typically Kauffmann': Fagott 16', Quintadena 8' and Principal 4'. It's not the exact combination that is typical, but the combination of flavors: a reed, a quintadena, a 16-feet register and a 8-feet. I'm stil not sure the 16-feet means that the piece is to be played an octave up or as notated. By means of experiment this time I play it as written ánd with the 16-feet Fagot. That result is actually quite intruiging.
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-valet-will-ich-dir-geben-1