BWV 570 - Fantasia in C Major Uploaded by: buluca Composer: Bach, J. S. Organ: Laurenskerk - Main Organ - 1973 Marcussen & Son Software: Hauptwerk IV Views: 255
Fantasia II in a Uploaded by: mweyand Composer: Froberger, Johann Jakob Organ: 1686/1860 Bosch-F.C. Schnitger, Vollenhove, Netherlands Software: Hauptwerk IV Views: 275
Well, most common of cause is the use of a Vox Humana or so, imitating an Italian tenor.
On the organ of Riddagshausen however I prefer this very soft registration, it sounds better in my opinion - let's say it's now a countertenor :-)