My transciption of a beautiful chorale prelude out of an improvized partita by Sietze de Vries, 2014 on the organ of Marekerk Leiden (NL).
Original source: youtube.com/watch?v=kQJG8ddol1M (4:32)
Recorded with the OAM-sampleset of the Bosch/Schnitger organ Vollenhove (NL).
A few notes in my rendition are different from the transcript you find attached, because I discovered some differences between my recording and the relistening of the original material, after recording.
Some small marked notes are uncertain or added for musical reasons.