Part I. Learning the craft : Eisenach, Ohrdruf, Lüneburg, and Weimar (1685-1703). The young Bach ; Study and models ; Initial efforts
Part II. The "first fruits" : Arnstadt and Mühlhausen (1703-1708). Bach in Arnstadt and Mühlhausen ; Chorale-based works ; Free works
Part III. "The golden years" : Weimar (1708-1717). Bach in Weimar ; The Orgel-Büchlein ; Concerto Transcriptions ; Large chorale settings ; Small chorale settings ; Free works : prelude-fugue pairs ; Free works : independent fugues and singular pieces
Part IV. The organist as Capellmeister : Cöthen (1717-1723). Bach in Cöthen ; Organ teacher, consultant, and recitalist ; Bach's art of registration
Part V. The grand synthesis : Leipzig (1723-1750). Bach in Leipzig ; Cantata and passion movements with obbligato organ and mischellaneous trios ; The six sonatas ; Free works : prelude-and-fugue pairs ; Free works : singular pieces and late prelude-and-fugue pairs ; Claiver-Übung III
Canon variations on "Vom Himmel hoch, da komm ich her" ; The Schübler chorales ; Nineteen large chorales of various sorts
Appendix : Three representative central German organs.