The grand organ is my favorite instrument, and I believe this piece to be very beautiful even though it was not designed for the organ nor has anyone ever heard of it. I insist you listen to the first 4 or so minutes: https://inv.nadeko.net/watch?v=hRqQYiqI1zg What little else I can find played by stern faced Theo Hes I do enjoy, tubular bells is also pretty: https://inv.nadeko.net/watch?v=HvAe2miZIoo You may also see a better view of the serene interior of the church: https://inv.nadeko.net/watch?v=t5pm6AN7vT0 I hope I can learn to better play the grand organ eventually, as you typically have to go somewhere else to practice.