First palpable hit of the evening: a full orchestra in the pit under hyper-alert Opera North stalwart James Holmes, saxophones deliciously rampant. Second hit: they've got the miking of the voices right (very rare in West End shows). Third: the first ensemble number, "Another opening, another show", sends spirits soaring. What follows is very good, sometimes excellent, occasionally fresh and startling.

All those pranks, set-ups, fake letters and disguises, they just keep coming thick and fast in Verdi’s Falstaff. The score has irresistible energy and momentum.

Peer at the small print and it’s clear that Berlin to Broadway with Kurt Weill is actually a spruced-up repackaging of a show originally devised by Gene Lerner and arranger Newton Wayland, about whom Opera North’s programme tells us nothing.

Striking it lucky with a successful new opera is a rare occurrence, though every company has a duty to keep on trying. The Royal Opera hit the jackpot with 4.48 Psychosis, a highly original approach to Sarah Kane's profound and authentic play by Philip Venables, the first Doctoral Composer-in-Residence on the scheme initiated by Covent Garden in alliance with the Guildhall School of Music and Drama. How could one not wish his successor, Israel-born Na'ama Zisser, all the best?

If you go to ENO’s Acis and Galatea expecting a grassy knoll draped decoratively with a Watteau shepherdess or two then you may be disappointed. Launched in 2017, the company’s reliably punchy Studio Live strand (stripped-back, small-scale, off-site performances) continues here with Handel’s “little opera”, reinvented for the Instagram age. #Nymphsandshepherds #Flockthis

Juanjo Mena, chief conductor of Manchester's BBC Philharmonic for the past seven years, took his official leave of them with a programme reflecting his great love, the music of his Spanish homeland. Albéniz and Falla, to be precise, and the greater part was a complete concert performance of the latter’s opera La Vida Breve.

What a great show, on every level. David McVicar’s Glyndebourne production of Handel’s Giulio Cesare, originally staged in 2005, and in its third revival this year, has a cast without a weak link, and never fails to draw in the audience to the work’s cycles of power, suffering, death and intermittent triumph. It brings us deep into the mind and essence of every character. And holds us right there.

Stumble across Grange Park Opera’s new brick-clad “Theatre in the Woods”, nestled amid a labyrinth of gardens and orchards next to the rambling Tudor pile of West Horsley Place in Surrey, and on a mild June evening you may feel as if you have fallen into some Home Counties version of a magic-realist novel.

It's awfully long for a fairytale in which a mystery prince helps a damsel in distress, and she asks him the question she shouldn't. Myth tends to go deeper, as Wagner did in The Ring of the Nibelung after Lohengrin. Here he captures the magic of transformation and transcendence, but in between there's too much hard-to-stage pomp.

You can always be sure of impeccable casting and spirited playing as Ian Page takes his Classical Opera through Mozart year by year. Just don't expect more than the glimmer of genius to come in 1768, though. It doesn't matter in those admirable showcase programmes highlighting the young Amadeus alongside more mature voices of the year in question.