A beautiful chorale (that I didn't know before) by Christian Gottlob Höpner (1799-1859; first time I heard of him too) ... so kind of premiere ... ;-)
Played on the flutes and strings of the main organ and the choir organ as well of the Regensburg sample set; a very nice accompaniment to the solo, played on the Voix humaine of the Schwellwerk.
Soft music also sounds great on this great instrument, in these beautiful acoustics.