Kirsten Beisswenger's competent examination of the surviving sources and her clear preference for Anna Magdalena Bach's copy contribute to clarifying many problems. The performance-practical suggestions supplied by Jaap ter Linden and the complete facsimile reprint of the main source add to the importance of this edition and place it alongside Barthold Kuijken's editions of the flute works. "I can imagine cellists preferring to play from the Breitkopf text, partly because it is free from the distraction of variants on the stave, partly because the more compact layout reduces page-turns."(Early Music Review)