The life of the brilliant composer and conductor Gustav Mahler was punctuated by crisis. His parents both died in 1889, leaving him the reluctant head of a household of siblings. He himself endured a nearly fatal medical ordeal in 1901. A beloved daughter died in 1907 and that same year, under pressure, Mahler resigned from the directorship of the Vienna Opera. In each case Mahler more than mastered the trauma; he triumphed in the creation of new...