THIS IS
OPERA
Béatrice et Bénédict
The comic opera  Béatrice et Bénédict, composed between 1860 and 1862, was Berlioz's last major work. Based on a simplified version of the plot of Much ado about nothing it is another example of his life-long admiration for Shakespeare who inspired several of his greatest works (as early as 1833 Berlioz had toyed with the idea of writing an opera on the subject).

    The Overture is one of Berlioz's most delicate and subtle orchestral pieces, and its allusiveness constantly teases the listener. Unlike Benvenuto Cellini, where the main theme of the overture does not in fact appear in the opera, all the music in the overture to Béatrice et Bénédict is adapted from the opera. Though drawn from no less than six different arias or ensembles, the music is seamlessly fused by Berlioz into a coherent symphonic whole, much as Weber had done in his overtures to Der Freischütz, Euryanthe and Oberon./
Source
Hector Berlioz
Productions of Interest
Plot
YouTube
Plot  2
Roles

Héro lyric soprano
Béatrice lyric mezzo
Bénédict lyric tenor
Don Pedro bass
Claudio baritone
Somarone bass
Ursule contralto
Léonato spoken
Wikipedia