As Dvořák’s "Song to the Moon" from Rusalka rose to its impassioned climax, Natalya Romaniw had to battle a helicopter thumping overhead. The helicopter lost (well, of course it did). As Nardus Williams and David Butt Phillip disappeared into the wings after a heart-rending "O soave fanciulla" from La Bohème, a squirrel scampered centre-stage to fill the dramatic vacuum.

Nostalgia of all kinds played a part in this summer evening’s divertissement. Some audience members were probably remembering when operetta held a greater sentimental sway than it does now; many would have been thinking of the full Opera Holland Park seasons – a proper theatre with raised seating, covered stagings, full orchestra and chorus – on what was now the bare terraced spot in front of the semi-derelict house.

Barrie Kosky’s production of Moses und Aron was staged at the Komische Oper Berlin in 2015 to mark the 70th anniversary of the liberation of Auschwitz. Schoenberg’s opera is philosophical and open to a variety of interpretations.

So much for the assertion that nowhere in the world would be staging the big Strauss and Wagner operas for the indefinite future. With a combination of lavish funding and good pandemic management on Austria's part, it’s been possible in Salzburg.

The Opera Story is an enterprising set-up based in London and founded with a mission to commission and stage new operas by early career composers. They have so far produced three full-scale pieces, the earliest from 2017, performed in a reclaimed warehouse space in Peckham.

"Touch her and you die," sings Masetto in telling Don Giovanni to keep away from his Zerlina. There's certainly trouble, though not instant death, when fingers briefly meet. Mozart's dark comedy has much in Da Ponte's text about hands-on business but only a few points where it's actually seen; love and sex don't really happen, though there are two skirmishes, one fatal.

Vintage champagne was served up last night, and whether you found the glass half-full or half-empty would depend on your perspective.

Rustles of renewal are stirring in the Surrey woods where Grange Park Opera has built the splendid theatre that remains, for this summer, sadly out of bounds. Faced with the cancellation of its 2020 programme, Wasfi Kani’s company has not simply relied, like many others, on a back catalogue of archive videos to keep its audiences onside.

How do you render pure goodness interesting? Unorthodox director Dmitri Tcherniakov and radiant young soprano Svetlana Ignatovich make us smile and break our hearts with their take on the maiden Fevroniya: living at one with nature, seeing God in everything and destroyed by her encounter with civic life.

Russia came late to the coronavirus lockdown, and will be leaving early – this evening Vladimir Putin announced that national measures were coming to an end, though the disease still rages there.