OPERA BOSTON'S BÉATRICE ET BÉNÉDICT | October 21, 23, 25 | Our "try-harder" opera company begins with a rare delight, Berlioz's version of Shakespeare's Much Ado about Nothing. The promising cast includes French-Canadian mezzo-soprano Julie Boulianne (replacing the previously announced Sandra Piques Eddy), tenor Sean Panikkar, mezzo-sopranos Heather Buck and Kelley O'Connor, and veteran Boston baritone Robert Honeysucker. David Kneuss directs, Gil Rose conducts. | Cutler Majestic Theatre, 219 Tremont St, Boston | $29–$171 |617.451.3388 or operaboston.org.