Title from disc label. Compact disc. Program notes and biographical notes on the performers in German with English translation (23 pages : portraits) inserted in container. Recorded. 2011 April 11-12. 2012 April 23-25. Klingenmünster. Recording producer: Ludger Böckenhoff. Gunter Teuffel, viola (1st-2nd works) ; Mandelring Quartett (Sebastian Schmidt, Nanette Schmidt, violins ; Roland Glassl, viola ; Bernhard Schmidt, cello).