One of the first arrangements I ever did for organ. I was playing around with a composite sample set I've been building and thought I would play this. The registration changes are a little rough because I dont have good buttons right now and no swell levers sadly.
The sample set is derived from the Friesach set. I turned it into a smallish (17 rank) Audsley style chamber organ that I think works much nicer than other organs of this size. Most ranks are drawn directly from the set, but some are re-pitched and re-voiced.
The real magic here is I ran it through Soundscape Renderer. A program that can simulate audio coming from different locations. The effect is that it sounds like you are siting inside the organ itself. (listen with headphones) It doesn't quite sound how I want yet but its pretty interesting.