Trio Sonata No.4 BWV 528 Uploaded by: sanden Composer: Bach, J. S. Organ: Laurenskerk - Main Organ - 1973 Marcussen & Son Software: Hauptwerk IV Views: 286
The „circle“ consists of a five bar ostinato that is repeated again and again. The melody enters the circle line by line at different angles. The only difference between circle I and circle II is that soprano and bass are swapped. Except for a climax towards the end, chorale II is a copy of chorale I in open harmony.