In his time, the Austrian American composer Arnold Schoenberg (1874-1951) was an international icon. His twelve-tone system was considered the future of music itself. Today, however, leading orchestras rarely play his works, and his name is met with apathy, if not antipathy. With this interpretative account, the acclaimed biographer of Toscanini finally restores Schoenberg to his rightful place in the canon, revealing him as one of the twentieth...