The internationally renowned Beethoven scholar, Jonathan Del Mar, has turned his attention to a set of chamber musical crown jewels: Beethoven's important opus 18 string quartets. The new Bärenreiter publication is not based on a reprint of the first edition parts, but makes use of a manuscript set of parts with some corrections in Beethoven's hand, which turned up in the 1980s.The new edition clarifies many ambiguities in slurring and dynamics as well as numerous wrong notes in the inner voices