Béatrice et Bénédict, Berlioz's last completed work, is based on Shakespeare's Much Ado About Nothing, but the libretto, by the composer, dispenses with most of the intrigue of the original and reduces the plot to a single premise: Béatrice et Bénédict mask their affection for each other by squabbling, and then finally come to their senses and get married. Although designated an opera, it is closer in effect to an opéra comique because of its very extensive use of spoken dialogue.
This is the masterwork, Gluck's last important opera, which convinced the teenage medical student Berlioz, when he first heard it in 1821, that he had to be a composer. He worshipped Gluck and took his side in the phoney "Gluck vs.Piccini War". He set himself the task of sitting in the Conservatoire library to copy out the entire score in order to absorb its lessons. Its directness and drama influenced his artistic style his whole life through, as evinced by key points in "Les Troyens".