The information about the German composer Justus Johann Friedrich Dotzauer (1783-1860) is rather vague. He is known to have practiced as the cello group concertmaster of the Dresden Kapelle Orchestra. There are also left numerous cello compositions belonging to his authorship, i. e. the whole school and 113 etudes in 4 volumes.
This exact edition includes 30 etudes from the 1st volume by Dotzauer arranged for contrabass. The majority of them is transposed one octave higher (No. 1-4, 7-10, 13, 15, 17, 18, 20) for to approach contrabass sounding to real cello tessitura (the contrabass part is used to be written down an octave higher relative to its real sounding). The other etudes are changed one third, fourth or fifth higher for to avoid ledger lines (lower than E) to be indicated. It won’t be easy to study this arrangement, however, the high positions here should be mastered excellently.
The fingering is mostly convenient, adopted for to undergo possible changes if necessary.