This paper examines the boulevard theaters’ rich tradition of parodying the Opéra, which took on a new form in the mid-nineteenth century. Quoting and alluding to the music and plot of operas such as Robert le Diable, these works—ranging from vaudevilles to new hybrid genres—critiqued the “excessive” technological spectacles of grand opera. Yet, they also drew upon these materials to exploit the audience’s persistent desire for musico-visual spectacle. Grand opera was far from alone in its explorations of technology, and these works both used it and contemplated its position in Parisian life. By exploring the contradictions of critique and influence inherent in this musical repertoire, this paper illuminates the rich—and largely unexplored—interactions between the different theaters, and their shared engagement with technological innovation.