How does Mozart do it? His music can provoke deep emotions even in the unlikeliest operatic situations, if well done, and present circumstances stirred them up all the more on Sunday afternoon. Those flirtatious ladies flouncing around the prone prince in the first musical number of The Magic Flute – no overture here – only had to sing “although it breaks my heart in two/I have to bid farewell to you/until we meet again" for another tearful turn of the screw.

Throughout this most difficult of years, the Royal Opera has done the right thing for the singers on its Jette Parker Young Artists Programme. They were fortunate to finish the run of Handel’s Susanna before the Linbury Theatre closed down for over seven months (yesterday saw its reopening to a necessarily small audience).

Think you’ve seen enough of monologues and duets over the past few months? Watch this and reel.

It may be only six and a half months since many of us saw a production of Beethoven’s Fidelio in the opera house, but that was another world, and this post-lockdown admittance to Garsington Opera’s spacious, award-winning pavilion with its impressive acoustic was always going to be something extraordinary.

Picture the scene. A vast steel gazebo covers a nondescript parking lot next to an industrial unit in Glasgow. With a clear plastic covering, it is the most rudimentary of shelters, sides open to admit the roar of the M8 and the wailing of sirens, carried on a keen autumnal breeze.

What could be better than Mozart’s Overture to The Marriage of Figaro to celebrate the Royal Opera’s next step on the path out of lockdown? Ideally, the rest of the opera, especially remembering Antonio Pappano’s lively interaction with his singers playing the continuo role.

In seach of Orpheus, and following a route from the Hades of (thankfully) masked beings on the underground to Archway, then up to a windy, grassy plateau just below Highgate village, this wandering critic encountered another myth about the power of life over death.

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.