The new "Breitkopf Urtext" edition by Joshua Rifkin draws on all relevant sources to restore the Mass to the state in which Bach left it for posterity. This means, first, a clear separation of the Kyrie and Gloria from the earlier Missa of 1733. Moreover, in the Credo the "Symbolum Nicenum" Rifkin has faced the challenge of sweeping away the overlay of additions by C.P.E. Bach and eliminating his alterations more thoroughly than Friedrich Smend had in the Neue Bach Ausgabe of 1954 and in later editions as well. "The NBA edition of this work has long been thought to be unsatisfactory, so in this case Breitkopf study score is better as well as a few euros cheaper."