“Who says Mozart is not like Rossini?” remarked Juan Diego Flórez, about a quarter of an hour into his debut recital at Symphony Hall. “There are seven high Cs in this aria.” And with a flicker of notes from the pianist Vincenzo Scalera, he was off into "Vado incontro", from Mitridate by the 14-year old Mozart. He wasn’t joking, either.

This was supposed to be a triumphant return – one final encore for the production so good that audiences just couldn’t let it go. Instead, this 13^th revival of Jonathan Miller’s Mafia Rigoletto seems like an apology. The designs are handsome as ever, the concept as neat, but the details of both direction and music are so scrappy and scattered that the show feels more like a basement clear-out than a loving restoration.  

It takes some pretty special casting to spice up Richard Eyre’s Royal Opera regular, currently returning for its 14th revival (with a 15th on the cards later this year). And that’s exactly what was on the bill here, with house debuts from both Joyce El-Khoury’s Violetta and Sergey Romanovsky’s Alfredo. If the result was at times uneven, it also had an energy, an uncertainty, that gave it a freshness lacking in more polished revivals.

Tradition – a choral spectacular for the penultimate night of the Proms – but with a twist – a youth choir and period instruments. Marin Alsop this evening led a spectacular Verdi Requiem, not least for the sheer scale of the chorus, the BBC Proms Youth Choir some 200 strong. The Orchestra of the Age of Enlightenment provided chacterful accompaniment, though sometimes struggled to compete, and the four soloists all delivered, particularly Tamara Wilson, here confirming her reputation as one of today’s leading Verdi sopranos.

Edward Gardner gives the downbeat, and the City of Birmingham Symphony Orchestra bursts into Verdi’s great opening guffaw. Enter stage left Graham Clark, as Dr Caius. Enter stage right Ambrogio Maestri, as Falstaff. And before a note has been sung, the audience is laughing. I know that in the post-Dumpygate era we’re not supposed to discuss a singer’s physical appearance. It’s just that everything about Maestri – his stature, his gait, his rolling eyes, his genial manner and his big rubbery smile – suggests that he was born to play the Fat Knight. He simply is Falstaff.

That often-repeated truism about Verdi's craziest melodrama, that it needs four of the world's greatest voices, makes no mention of acting ability. Given the top-notch international approach to this kind of opera, impressively fielded by what's called "Cast A" here, German director David Bösch was right to build a dark, consistent visual world around mostly stand-and-deliver performances rather than demand too much of his stars. Conductor Gianandrea Noseda's febrile, focused musicality helps Bösch and his team deliver the essence of this tricky masterpiece.

Every year is Shakespeare year in theatre, opera house and concert hall. An anniversary's best, though, for those select few galas where the mind's made flexible by constant comparison between different Shakespearean worlds. I don't know how it was at Stratford last night – BBC Two will provide opportunity enough to catch up – but things could hardly have been more impressive on the Southbank, where Vladimir Jurowski and his London Philharmonic Orchestra reminded us what a gamut they've run both at Glyndebourne and at the Royal Festival Hall.

Verdi’s dark tale gets even darker in this new staging from Calixto Bieito. He updates the story to the Spanish Civil War, a setting with plenty of opportunity for his trademark violence but also offering illuminating parallels on the story itself. ENO has assembled a fine cast for the occasion, and the musical direction, from Mark Wigglesworth, is dynamic and dramatically engaged. The result is a staging that gives rare focus to this sprawling score, and to its grim implications of tragedy and fate.

Mark Wigglesworth and I go back quite a long way in terms of meetings – namely to 1996, when I interviewed him for Gramophone about the launch of his Shostakovich symphonies cycle on BIS. He completed it a decade later, though that release hung fire until last year. We should have discussed the whole project shortly afterwards, but despite his generously coming to talk to the students in what was then my Opera in Focus class about Parsifal, which we were studying, I wasn’t able to keep my part of the bargain.

September is upon us and it’s nearly time for the new season. English National Opera’s Artistic Director John Berry may have left the building but his enterprising legacy lives on in a 2015-16 season that looks on paper as good as any in the past 20 years; what happens after that is anyone's guess. Still, there shouldn’t be too much grief that ENO Music Director Edward Gardner has moved on, since his successor Mark Wigglesworth already has a fine track record with the company.