With its many moving parts, opera should never be declared a failure on the basis of its production. Though not the most important component, it's the most obvious, which is probably why the Opera Company of Philadelphia's Romeo et Juliette drew such a tepid opening-night response Friday in a production updating the story to today's fashion world.
The so-so Gounod opera has just enough beautiful (though not always dramatically compelling) music to warrant a hearing, particularly with an attractive, vocally appropriate cast - certainly the case with soprano Ailyn Perez and tenor Stephen Costello, who enjoy extra cachet for having come of age at the Academy of Vocal Arts, and who now have the stage savvy to cope with much of what any given high-concept production could throw at them.