In 1950, the commemorations of the bicentennial of Bach's death in
Göttingen and
Leipzig led to the initiative to publish his complete works in a critical scientific edition. Musicologists such as
Friedrich Blume,
Max Schneider,
Friedrich Smend and
Heinrich Besseler, and sponsors such as
Bernhard Sprengel and made the project possible, supported by the editor
Karl Vötterle. The
Neue Bachgesellschaft recommended to pursue the project as a joint venture of musicologists in Göttingen, then
West Germany, and Leipzig, then
East Germany, in order to stress that the common cultural heritage was indivisible. The Bach Archive and the Johann Sebastian Bach Institute collaborated, their directors
Werner Neumann and
Alfred Dürr made the new edition their life's project. The publishers were
Bärenreiter in
Kassel, chosen in 1951 by the Federal Government, and from 1954 the Deutscher Verlag für Musik, a new publisher in Leipzig which was involved until the unification of Germany. Initially the duration of the edition was estimated as 15 to 20 years, but the scientific work with the sources required much more time than anticipated. The first volumes appeared in 1954. The director in Göttingen, from 1962 to 1963, was
Georg von Dadelsen. The edition was completed in June 2007. == Content ==