Which is the locked-in character of the two in Bluebeard’s Castle? In composing his one-act masterpiece of shattering profundity, composer Bartók clearly intended Bluebeard’s as “the tragedy of a soul destined to be alone”; the woman Judith unlocks five doors to his psyche, but two more doors must be left shut.

Where is the stage – outside or within? The question posed by the prologue of Bartók’s only opera addresses the fundamental privacy of our thoughts, as well as setting the scene for its drama within the theatre of our own minds. For many of us a year and a half of periodic lockdown has only turned up the volume on the echoing contents of our heads, lending an unlooked-for familiarity to Bluebeard’s forbidding castle.

Yes, it was bound to be HMS Laugh-a-minute, given Cal “One Man, Two Guvnors” McCrystal’s ENO comedy riffs on an already funny early G&S classic, but what does this tight little craft have to say to Little England today?

Tom Rakewell Esquire, the Glyndebourne edition generally known as “the Hockney Rake” though it is very much director John Cox’s too, is 46 years old.

So Helen of Troy arrives at a church in Fulham via Poseidon’s island palace and a pavilion at the foot of the Atlas Mountains. She’s trickier than ever in the golden but tangled web Richard Strauss and his myth-and-symbol-mad poet Hugo von Hofmannsthal weave around the story of a phantom beauty wreaking havoc on Greeks and Trojans while the real version gets whisked off to the Egyptian desert.

Leonard Bernstein’s one-act opera Trouble in Tahiti enjoyed a relatively trouble-free gestation, at least compared to his other stage works. Its seven short scenes last around 50 minutes, Bernstein providing his own libretto and completing much of this acerbic, occasionally bitter study of a marriage in crisis whilst on his own honeymoon in 1951.

If it ain’t broke… on tour and in the Glyndebourne summer festival, Mariame Clément's production of Don Pasquale has gratified audiences for a decade now. It surely will again in Paul Higgins's spirited revival. The show returns to the Sussex house at the start of this year’s tour with the leaves about to turn but the gardens still ablaze with late-season colour.

2016

At the heart of Janáček’s searing music-drama, and the pioneering play by another remarkable Czech, Gabriela Preissová, on which it is based, are two strong women trapped in a conventional community whose intelligence goes to waste and whose lives take tragic turns.

It’s easy enough to see the difficulty Madam Butterfly places your thinking director in. I share her pain.