"David Levin's Unsettling Opera: Staging Mozart, Verdi, Wagner, and Zemlinsky is an ambitious book, and one that opens with an unusual insight: namely, that the onstage performance practice of opera in the last twenty years is a field ripe for academic discourse, one that promises to uncover new perspectives on the restricted repertoire of historical musicology. Levin suggests that operatic productions in Europe and the United States have amply paid homage to academic concerns about the production of meaning and other post-modern enthusiasms. Yet academia has not returned the favor, instead preferring studies of historical performance practice that largely ignore contemporary productions. Of course, it is by no means the case that no one c...