Psychological depths in the myth of the water nymph who yearns for the human world, with disastrous results, have led to some unusual settings for Dvořák’s operatic masterpiece on the theme: a nursery, a hotel room (both successful), a brothel (not so much). What, though, when a production returns to the fairy-tale, developing at the same time the ecological devastation implied in the opera?

All that glitters, titular treasure included, is dangerous childsplay in Richard Jones’s third UK staging of what Wagner called the “preliminary evening” to the three main operas of The Ring of the Nibelung. It’s nothing like the previous two, for the Royal and Scottish Operas, in some ways disconcertingly minimal and occasionally ugly to look at. Yet everything adds up and unlike the cast for his Valkyrie, this team has the perfect mix of vocal and acting gold.

Rodula Gaitanou’s production of Richard Strauss’s Ariadne auf Naxos is a hugely entertaining treatment of an opera that brings its fair share of problems to any company, and the chief virtue of Opera North’s presentation (a co-production with Gothenburg Opera, now seen in the UK for the first time) is the wonderfully well suited casting.

It’s good to think that there are some opera productions – not just compositions – that in themselves can have the status of classics. David Pountney’s 1980 interpretation of Janáček’s The Cunning Little Vixen must be high on a list of contenders for that accolade. It was first seen at the Edinburgh Festival that year, performed by Scottish Opera in a co-production between them and Welsh National Opera.

It’s always a disappointment when the Venusberg orgy Wagner added in 1861 to his original, 1845 Tannhäuser to suit Parisian tastes gives way to foursquare operatic conventions. Especially so in this revival of Tim Albery’s 2010 production, where Jasmin Vardimon’s choreography (pictured below) seems executed with more brilliance than ever and post-viral vocal problems loomed large last night for this hero.

This multimedia horror revue gave me heart trouble, which is an odd kind of compliment. Not at first: the assault of abrasive music, the one singer having to leap all over the place vocally, competing with spoken word and information overload, can seem self-defeating. And that vile word “lobotomy” is enough in itself to trigger a panic attack. But ultimately the impact is powerful, unforgettable, in tune with great artistic statements about the human condition.

The obstacles that have faced Noah Max in the five years since he resolved to make an opera of John Boyne’s Holocaust novel The Boy in the Striped Pyjamas would have stymied someone less determined. Not just the usual fundraising and logistical challenges that every opera has to deal with, but also Covid – and the demand from the story’s rights holder for £1 million for their permission.

Amanda Majeski pushed the boundaries as Janáček's tormented heroine for director Richard Jones at the Royal Opera. Here there were confines – no “concert staging” this, but a laissez-faire affair with scores and music stands, occasionally obscuring the stage directions – but she still conveyed the essence in front of Simon Rattle’s throbbing, luminous London Symphony Orchestra and flanked by other cast members of uniform excellence.

Looking through everything we’ve covered this year – and some of our reviewers have made their choices from an even wider sphere – I find, as in 2021, that the abundance of classical-concert top choices is richer than the number of truly outstanding opera productions. Personally, I’ve seen only three performances in the UK that ticked all boxes (production, singing, conducting, top quality work) and three abroad, despite limited travel.

“The great thing about this production,” Colin Davis observed in 2003, during rehearsals for its very first run, “is that the director [David McVicar] hasn’t attempted to shock anybody. He has tried to tell the story of The Magic Flute. And thank God for that.”