Complex sentence: Opéra-comique, traditionally performed at the Salle Favart, was also staged at the Théâtre de Monsieur from 1789, in 1791, it set up home in a new theatre, the Théâtre Feydeau, previously reserved for the troupe of the opera buffa.
Split into simpler sentences: Opéra-comique, traditionally performed at the Salle Favart, was also staged at the Théâtre de Monsieur from 1789. In 1791, it set up home in a new theatre, the Théâtre Feydeau, previously reserved for the troupe of the opera buffa.