You can take the girl out of the barracks but you can’t take the barracks out of the girl would be one way to sum up Donizetti’s La Fille du régiment (Daughter of the Regiment), which I can’t conceive could have a more ribtickling production, more brilliantly sung, than the delight that opened last night at Covent Garden. Kill, as they say, to get a ticket. It has Natalie Dessay, Juan Diego Flórez, Ann Murray and Dawn French, and in a starring supporting role comes one of the wittiest set of translating surtitles I’ve ever come across. “It’s raining soldiers,” complains the butler as the aristocratic kidnap of regimental mascot Marie goes wrong. “They’re my daddies,” she shouts happily.