Hans-Eberhard Dentler, a graduate medical physician but also an outstanding cellist and pupil of the renowned Pierre Fournier and founder of a Bach Society in Italy, has occupied himself with this opus over the course of many years. Because he finally wanted to realize Bach's score in a manner true to its spirit and sound, he found a concept for his ensemble ''L'Arte della Fuga'' that unifies its more profound scholarly background with practical musical and artistic aspects. The puzzle of this work can only be solved when one grasps its rootedness in the sphere of Pythagorean musical thinking. Dentler's edition, scored for violin, viola, violoncello, double bass and bassoon in an utterly well thought-out arrangement of movements will soon be published by Schott Verlag in Mainz.