O heiliger Geist, O heiliger Gott

Kauffmann’s prelude on “O heiliger Geist, o heiliger Gott” calls for the almost impossible combination of a Quintadena 16′ and Fagot 16′ in the left hand and a Vox Humana in the right hand. The Müller organ in Haarlem is not exactly a small organ, but I had to use a coupler not present in the real instrument to approach the sound Kauffmann intended. And even then I had to mimic the Vox Humana with the Oboe of the hoofdwerk.
But the result is very nice. There obviously is a lot to be learned in Kauffmann’s registration prescriptions.

Registration:
BW: Quintadena 16′, Baarpijp 8′, Fluit douce 4′
HW: Viola di Gamba 8′, Oboe 8′ (RH)
RW: Fagot 16′ (LH)
Rw+Bw

Score available here: http://partitura.org/index.php/georg-friedrich-kaufmann-o-heiliger-geist-o-heiliger-gott/