Twenty-one years ago, critics were alarmed by Ben Elton’s deranged musical We Will Rock You. But, despite the "staggeringly awful" reviews, the show somehow went on to have 12 long (and painful) years of West End success. So, here we are again. The car crash of a show is back for a summer run at the London Coliseum. But has it made any progress in its nine-year hiatus? Sadly not.

Is Korngold a second-rank composer with some first-rate ideas? Most performances of the 23-year-old Viennese prodigy's Die tote Stadt make it seem so. Nearly smothered in glitter and craft, the story can compel – an oblique, promising stance on Georges Rodenbach’s Bruges-la-morte, about an obsessive widower who thinks he sees his dead wife in a vivacious dancer. Does Annilese Miskimmon, ENO's semi-visible Artistic Director, carry it off?

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.

So there’s this prince, see, and he’s not at all happy. For a start, he never got over losing a parent when he was a child. He’s at odds with the world, sick to death with royal protocol and convinced that no one understands him. Worse, having too much time on his hands, he suffers from delusions. Meet Prince Siegfried, who found his soulmate, and met his nemesis, on a moonlit night by a lake.

Looking for a sparkly operatic musical, well sung and played, slick and saturated in a range of mainstream styles that stop short in the year the movie masterpiece It’s a Wonderful Life was released, 1946? Then Jake Heggie’s 2016 confection may be for you. One thing’s for sure, though: it may be trying to do something different from the Capra classic, and it’s welcome to have the Bailey family as African Americans, but this isn't a patch on the rather more layered film.

I still remember vividly my first encounter with ENO. I was taken, as a nine-year-old boy, on a school trip to see a performance of Peter Grimes. And I was hooked. I pestered my parents to take me back several times to that same production. I can still hear the ringing of the "Storm" Interlude, and see the waves projected outside the door as the characters entered the pub (and I still remember sniggering with my classmates at the line "that’s a bitch of a gale out there").

Sullivan’s Overture to The Yeomen of the Guard isn’t quite the equal of Wagner’s Prelude to Die Meistersinger – what is? – but its brass-rich brilliance and wholesome ceremonials wouldn’t have been possible without that great example. Cue the first of director Jo Davies’s missteps as a 1950s newsreel gives us the “backstory” of alleged spy Colonel Fairfax’s imprisonment: loud broadcast voice over Chris Hopkins’ already speedy account is a big mistake.

Rome, 14/15 June 1800: the specifics of the original Sardou melodrama are preserved in Puccini’s thriller mixing love, lust, religion and tyranny. Many productions move forward in time, and sometimes change the place, with ease: after all, feudalist power-abusers remain with us. Director Christof Loy decides that police chief Scarpia and his allies should be of the era following the French revolution, while artist Cavaradossi is a “timeless” freedom fighter.

First staged in 2018, Bartlett Sher’s Lincoln Center Theater production of My Fair Lady is London’s latest import from Broadway, coming here hot on the heels of Oklahoma!. In returning to the city where its story is set, Lerner and Loewe’s iconic musical from 1956 receives a dashing treatment from a cast and creative team in their top form.