Dotzauer études have been part of the standard repertoire in cello lessons for generations. Johann Friedrich Dotzauer (1783-1860) was among the major cellists and cello pedagogues of the 19th century and knew what makes a good étude: it should deal specifically with a certain technical problem and at the same time not be monotonous, but musically appealing. The cellist of the Leipzig Gewandhaus and the Dresden Hofkapelle managed to do that in an exemplary manner. Our new edition of the 18 progressive études Op. 120 follows the original sources and contains the original text. While the Dotzauer études are usually only available in selected editions today, opus 120 is edited here in its entirety, as conceived by the composer himself. Notes on studying and on the performance practice (dynamics, vibrato, change of position, ornamentation, bowings) make the new edition an ideal reference edition for music lessons.