This transcription on the Bach organ work is the "center-cut" choral section of a larger work by that name. It is a particularly interesting work with its continuously cascading theme, long sustained chords, almost never fully resolving until the thundering climax.
This particular transcription is set for large brass choir, 3 Trumpets, 2 F Horns, 3 Trombones, Euphonium, Tuba and Timpani. The parts being produced using GPO and JABB libraries. The rendered performance at;