With Richard Wagner, opera reached the apex of German Romanticism. Originally published in 1851, when Wagner was in political exile, Opera and Drama outlines a new, revolutionary type of musical stage work, which would finally materialize as The Ring of the Nibelung . Wagner's music drama, as he called it, aimed at a union of poetry, drama, music, and stagecraft. In a rare book-length study, the composer discusses the enhancement of dramas by operatic...