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Opéra comique, a genre of French light opera, is the style for which Messager is most celebrated. Characterized by spoken dialogue interspersed with musical numbers, opéra comique typically features humorous and romantic plots. Messager's contributions to the genre are known for their melodic charm, witty orchestration, and clever storytelling, making him one of the most prominent composers of opéra comique during the late 19th and early 20th centuries.