Danish Pipe organ composer Frederik Magle recorded a 2-CD set of improvisations on a new pipe organ at the 11th century Jorlunde Church near Copenhagen. The church's regular organist brought in the composer to help with the organ design process. Here is a YouTube video sent to me yesterday by the composer. What a delightful surprise! Magle is Protestant, baptized and raised in the Danish national church. Writing about the two days of improvisation for the recording, he described the experience as one of being "completely and utterly withdrawn from the world outside (while outside the church walls, the worst snowstorm in many years raged - making the real world itself seem like a fantasy in many ways."
Also, there is more information about the organ on the composer's website.
