Original: The French writers' duo Henri Meilhac and Ludovic Halévy wrote a large number of opera and operetta libretti for the likes of Jacques Offenbach, Jules Massenet and Georges Bizet.
Simplified: Two French writers called Henri Meilhac and Ludovic Halévy wrote a large number of opera and operetta libretti for the composers Jacques Offenbach, Jules Massenet and Georges Bizet.