Jean Paul published this music and composed it via a music editor. He kindly offered the sheet music and MIDI file, so I could see info for registrations between pppp and ffff. So it took some time to create 9 presets for the music and then also the timing was trick, e.g. to go from ff directly to pp, because of acoustics. The music is meant for a large concert organ, so I created this music on my Dudelange sample set.