I know I've Been Changed Uploaded by: Hautbois Composer: Traditional. The arrangement was sent to me by a kind user here on the forum who I don't remember :- Organ: Royal Hospital School Grand Organ - Barritt Audio Software: Hauptwerk VIII Views: 49
For this Reformation Day variations on Ein feste Burg ist unser God (melody by Maarten Luther) from Jan Zwart, a famous Dutch composer of organ music from the beginning of the 20th century.
His music is widely loved in the Netherlands and his sons and grandsons still were/are playing in various Dutch churches.
This is one of his most colorful pieces.