Much has been speculated on the instrumentation of this contrapuntal masterpiece since Bach's death. For a long time, the fragmentary work was regarded as a piano work but since the early 20th century musicians have experimented with various instrumentations. This arrangement by Hans-Eberhard Dentler, who has carried out scientific research on The Art of Fugue for decades, manages through the choice of instrumentation not to use any kind of transposition. It also ensures the best possible transparency and faithfulness to the score through the soloistic rendering of the individual parts: the combination of bassoon and double bass as well as the assignment of the violoncello to the tenor part are the key to the faithful reproduction of all parts without any intervention of the arranger.