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.

Berlioz called it a "concert opera". His telling of the Faust story is in scenes and highly theatrical, but a bit of a challenge to put on in the theatre, with its marching armies, floating sylphs, dancing will-o’-the-wisps and galloping horses. It seems he expected it to be a kind of giant cantata, and that’s the way the Hallé and Sir Mark Elder perform it.

The flayed corpse of a dead seal hangs red and grotesque at the back of the stage. It’s a placeholder; we know that by the end of Anthropocene – Scottish composer Stuart McRae’s latest collaboration with librettist Louise Welsh – something more familiar, and far more horrifying, will take its place.

Backstories, we're told, are a crucial part of stage visionary Richard Jones's rehearsal process. Janáček, or rather Russian playwright Ostrovsky on whose The Storm the composer based Katya Kabanova, gives several of his hemmed-in characters narratives to suggest what they were and why they are where they are now (not good), stuck in a deadly dull – or just plain deadly – provincial town. It's a tribute to Jones's outwardly spare production that we want to know more.

A sad tale’s best for winter, and Opera North have returned to Janáček’s lyrical taken on a classic Russian drama of domestic abuse, guilt and suicide for this ingredient of their current season. Director Tim Albery and designer Hildegard Bechtler created their production 12 years ago, revisiting their partnership on the same opera for the company eight years before that.