(Credit: © Andreas Hechenberger) The Mahler Chamber Orchestra has announced a conductor change for its Nov. 6 & 7 concerts. The orchestra revealed that conductor Joana Mallwitz has canceled the concert for health reasons. As a result, Christoph Koncz will conduct. Konz has conducted the Orchestre de la Suisse Romande, Philharmonia Orchestra London, Orchestre Métropolitain de Montréal and Hong Kong {…}