Brahms completed his Cello Sonata op. 99 during the productive summer of 1886. The first public performance took place in Vienna on 24 November of the same year. Robert Hausmann played the cello part and the composer himself was his partner at the piano. Even though the work was generally received positively it took some years until it was fully appreciated and gained its irrevocable place in the cello repertoire.

Of particular value to the editors were the two early performance editions of the Cello Sonata op. 99 by Hugo Becker and Carl Friedberg as well as by Julius Klengel. Both cellists Becker and Klengel had a connection to Brahms who very much admired and trusted Becker's playing and who performed together with Klengel. This edition not only incorporates Becker's and Klengel's performance markings but also Hausmann's for whom the piece was written. As such the Barenreiter edition comes with a cello part marked with fingering and bowing by the editors which are based on the practices of Brahms' contemporaries. We also provide an unmarked Urtext part.

An important part of this edition is the Preface. Firstly it informs about the work's origin early performances its publication history as well as early reception. Truly remarkable is the unique detailed Performance Practice Commentary. Here the editors start from the premise that already a few decades after Brahms' death a widening gulf developed between the composer's expectations and the performance practices of the early 20th century. On the basis of manifold sources which include memoirs by pupils and chamber music partners treatises and essays early instructive editions and historical recordings the editors deal with key issues in understanding Brahms' notation. By a section-by-section analysis of rhythm and timing dynamics and accentuation dots and strokes slurring and non legato piano pedalling and overholding piano arpeggiation and dislocation string instrument fingering string instrument harmonics and vibrato the editors provide an indispensable assistance for a historically informed interpretation of the work.

At the same time the edition offers an exciting and often surprising insight into musical interpretation of the German Romantic Era in general.