The Met has gathered a lot of French talent around this short run of Massenet’s Manon: the bass-baritone Nicolas Testé as Count des Grieux, the tenor Christophe Mortagne as Guillot, Emmanuel Villaume in the pit, all of them in a production by Laurent Pelly. Vittorio Grigolo and Diana Damrau star as Des Grieux and Manon. Mr. Grigolo is now at home at the Metropolitan Opera where he gave a recital and sang in three different productions in the last year. Grigolo’s...