CORRECTION TO THE ORIGINAL POST:
I originally posted this a being Rotterdam, but in reality, I uploaded the Doesburg instead. I've corrected the info on this post and have now uploaded Rotterdam as a new listing.
Sorry for the confusion. I don't do well late at night!
I've been wanting to post this for awhile, but I've never had the music at home to do so. I'm curious to know if anyone knows anything about it. I've never heard anyone else play it, nor can I find anything similar in Marcello's writings, so I'm not really sure where/what this is from. Any ideas? This particular arrangement is from the July 1975 edition of the Sacred Organ Journal (Lorenz) and is arranged by Jon Spong.