With the terms visionary and despot, the author seeks to circumscribe the multilayered personality of Gustav Mahler. Opening up a terra incognita, he draws a comprehensive map of the various aspects of Mahler's inner biography: his unshakable belief in the sacredness of musical art and strongly developed sense of mission, his double life as conductor and composer, his inexorability and refusal to compromise vis- -vis himself and others, his discomfort...