I find this an exceptionally beautiful Chorale Prelude. I think the Trost organ is an exceptionally good organ for Chorale Preludes, offering a wide choice of beautiful softer timbres. The registration for this was OW: Flote Dupla 8, Spitzflote 4, Nasat, accompanied Potitiv: Gedackt, Ped: Subbass 16, Portun 8.
Listening back I am struck how how well the OW stops blend into a single voice.