This volume includes organ works based on chorales surviving in various sources. Some of these works were not previously included in the “New Bach Edition” either for reasons of doubtful authenticity or because they were unknown until now. Two pieces from this repertoire – the two arrangements of “Wie schön leuchtet der Morgenstern” BWV 739 and 764 – stem from one of Bach’s autograph manuscripts. They had been omitted until recently because of doubts of authenticity.