André Messager's Fortunio premiered in 1907 at the Opéra Comique, where it received acclaim that was to last decades. One of the last composers to devote his entire career to opera and operetta, Messager exemplified in his music a feeling for dramatic pacing and the spirit of the Belle Époque, qualities that permeate Fortunio, a comédie lyrique in which the dialogue in the libretto is...