The famously tempestuous Romanian soprano is, we learn, living a separate life from her husband Roberto Alagna. If Opera's Most Romantic Couple is no more, will Brand Angela be terminally damaged? Surely a showcase performance in the South Bank's International Voices season would be just the thing to rally the faithful and reaffirm Ms Gheorghiu's spectacular star quality, but I must admit that by the time we reached the interval, I was beset with gnawing doubt.

It’s a let-down when a new production of an opera that spends two acts feeling dazzlingly invigorating and clever collapses in a careless mess in the third. My guess is that a key scene for the concept of English National Opera’s Turandot is when Ping, Pang and Pong - three very grand court officials - turn out to be Chinese cooks sneaking smokes up the fire escape at the Emperor Palace restaurant. It's a sharp idea, generating a sensationally visual production, but that fire escape's got to lead somewhere, and in the end it's nowhere.