Selfish, cunning, cynical, the older generation has screwed up the world with aggression abroad and dishonesty at home. Can their children make it good again? This family drama of transgression and reparation threads through Idomeneo, the opera that Mozart – who had his own troublesome issues with both biological fathers and father-figure patrons – premiered in Munich in 1781.

What’s the one thing everyone knows about Robin Hood? That he steals from the rich and gives to the poor. So it was quite a brave decision to re-cast Robin as a rapacious Tory shires MP, doing his best to stop the poor becoming rich. At least, I think that was what happened: in much of the story is opaque, even having read the synopsis carefully.

It speaks vivid volumes for the superb health of our music colleges that the Guildhall School tackles every aspect of Britten's long and layered Shakespeare adaptation with total confidence.

It’s all there. High kicks and tight corsets; silk and sequins and shenanigans in a broom closet; hot pinks and still hotter can-can girls; waltzing, scheming, sparring, and a bit with a banquet table. There’s even a dancing beaver. So why don’t I feel more elated?

Give hope to all, says Despina: play-act. Così fan tutte has always been a piece about four young and silly people being appalling to one another without much need for encouragement from a cynical old manipulator and a confused maid who, in the main, is the one character capable of arousing real sympathy.

Hel, heroine of Gavin Higgins and Francesca Simon’s new opera, is the illegitimate daughter of the Norse god Loki. In many ways The Monstrous Child itself feels like a bastard offspring, born – moody, mouthy and full of fragile rage – to Wagner’s Ring Cycle and Skins or possibly 13 Reasons Why.

Stravinsky acknowledged that his orchestra for The Rite of Spring was a large one because Diaghilev had promised him extra musicians (“I am not sure that my orchestra would have been as huge otherwise.”) It isn’t huge in Opera North’s production (★★★★★), and for practical reasons they're using the edition arranged by Jonathan McPhee in 1988 for a standard pit band.

I last saw this Magic Flute, directed by Dominic Cooke, when it was new, some 14 years ago, and I remember it mainly, I’m afraid, for its lack of visual charm.

You start off fighting it. Those arpeggios, the insistent reduction, simplification, repetition, the amplification of the smallest gesture into an epic. Then something happens. Somewhere among the slow-phase patterns pulsing on ear and eye, you surrender to Glass-time and the hypnosis is complete.

Why is Un Ballo in maschera not as popular as the trio of Verdi masterpieces – Rigoletto, Traviata, Trovatore – that, with a couple of digressions, preceded it in the early 1850s? Its music is scarcely less brilliant than theirs, and if its plot is on a par of absurdity with Trovatore’s, it is at least, on the whole, more fun. One problem might be a certain thinness in the portraiture, as if Verdi was more interested in the incidents than in his characters.