Op. 135 presents two antinomic aspects: it is on the one hand a composition of the most appreciated, but on the other hand, all attempts to edit have remained unsatisfactory. The sources that have come to us pose various problems. Indeed, Beethoven's autograph contains many contradictions in comparison to his autograph copy of the parts. The publisher of the first edition, published in 1827, smoothed the differences as he wished, since the composer had died in the meantime. Subsequent editions have taken over the corrections thus made. With this edition, Rainer Cadenbach tries to present an authentic text. Revealing the contradictions of the work, it stimulates the personal initiative of the musician. This ambitious edition is also distinguished by the optimization of page changes.
(Note from the editor)