Most organists are familiar with Georg Andreas Sorge (1703 – 1778) because of his 12 Trios for organ, widely used in organ playing education.
That Sorge had a knack for writing trios is also clear from his choral preludes. His best choral preludes are the ones that were conceived as choral trios. Typically Sorge writes a three part introduction and accompanies the choral melody with a two part accompaniment.
In recent years I published several of them on my website. Inspired by yolar's recent upload (
https://www.contrebombarde.com/concerthall/music/43733) I decided to look again at them.
Sorge's choral prelude on the melody of "Helft mir Gottes Güte preisen" is a very nice example of this type of choral prelude. Sorge writes a very lively introduction in three parts and accompanies the choral melody with a two part accompaniment employing the same motives as the introduction.
Sadly, Sorge just finishes the piece where the chorale melody ends. I would have expected Sorge to repeat the introduction. As I like the introduction a lot, I decided to add it at the end of the piece. I think it creates a nice musical structure, though I had to add half a bar to create a firm ending in g minor.
Of course it's very debatable to adjust someone else's composition in this manner. I think it creates a satifying whole. What do you think?
Sorges's compositions are available here:
http://partitura.org/index.php/sorge-georg-andreas/