Jürg Dähler, Heinz Holliger, Musikkollegium Winterthur, Christian Jost, Hans Ulrich Lehmann, Nadir Vassena, David Philip Hefti, Morton Feldman, Giya Kancheli, Willi Zimmermann, Jac van Steen, Douglas Boyd, Beat Furrer sanatçısından Jürg Dähler · Viola Concertos / Signatures of Life