Opera: Is Philip Glass’ trying to bore his way into immortality?

First nights at English National Opera are, in the main, matters for a sociologist rather than an opera critic. That emphatically wasn’t the case with Wozzeck, but that is an acknowledged grim masterpiece, though still, nearly 90 years on, enough to put off casual opera goers and trendies. But the succession of vacuous new works that ENO has mounted in the past few years has attracted audiences, at any rate first-nighters, of a kind that one doesn’t see at any other operatic performance.