Jürg Dähler · Viola Concertos / Signatures of Life – LIVE! by 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