Dotzauer etudes have been part of the standard cello repertoire for generations. Friedrich Dotzauer (1783-1860) was one of the most important cellists and cello padagogues in the 19th century and knew what constitutes a good etude: it should deal with a specific technical task in a targeted manner and at the same time be not monotonous, but musically appealing. The cellist of the Leipzig Gewandhaus and the Dresden court orchestra succeeded in doing this in an exemplary manner. Our new edition of the 12 Etudes Op. 107 follows the original sources and offers the original text. While the Dotzauer Etudes are mostly only available in selected editions today, Opus 107 is here completely edited, just as the composer himself conceived it. Notes on rehearsing and performing (dynamics, vibrato, position changes, decorations,