Why are some of the most beloved and frequently performed works of the late-romantic period—Mahler, Delius, Debussy, Sibelius, Puccini—regarded by many critics as perhaps not quite of the first rank? Why has modernist discourse continued to brand these works as overly sentimental and emotionally self-indulgent? Peter Franklin takes a close and even-handed look at how and why late-romantic symphonies and operas steered a complex course between modernism and mass culture in the period leading up...