The Royal Northern College of Music is in the mood for celebration. Its 50 years of existence warrants popping the champagne corks big-time, so for its end-of-year operatic production Die Fledermaus is just what the doctor ordered.

Only a group of top musicians stood, or mostly sat, between a full but necessarily small house and Dr Malatesta’s Plastic Surgery Clinic in the bijou surroundings of Dun Laoghaire’s 324-seater Pavilion Theatre.

Looking for a sparkly operatic musical, well sung and played, slick and saturated in a range of mainstream styles that stop short in the year the movie masterpiece It’s a Wonderful Life was released, 1946? Then Jake Heggie’s 2016 confection may be for you. One thing’s for sure, though: it may be trying to do something different from the Capra classic, and it’s welcome to have the Bailey family as African Americans, but this isn't a patch on the rather more layered film.

Paris, Vienna, Rome – all have their operatic homages. But London (and I mean real London, not the slightly-grey Italy of Donizetti’s Tudor Queens) only rarely makes it into the opera house. Curiously, on the rare occasions it does, it’s the seedy side of things that’s very much at the fore in The Beggar’s Opera and, of course, the Hogarth-inspired The Rake’s Progress.

Handel’s audiences must have taken a very long time to settle – at least an act, to judge from the mostly inconsequential music of Alcina’s first hour. Lovely: we’re on an enchanted isle where puritanical people have been transformed into animal-headed courtiers, and a love-imbroglio merits only a “so what?” Richard Jones and his singers keep it lively and focused, but the bounce needed from Christian Curnyn and the Royal Opera House Orchestra doesn’t come.

Sullivan’s Overture to The Yeomen of the Guard isn’t quite the equal of Wagner’s Prelude to Die Meistersinger – what is? – but its brass-rich brilliance and wholesome ceremonials wouldn’t have been possible without that great example. Cue the first of director Jo Davies’s missteps as a 1950s newsreel gives us the “backstory” of alleged spy Colonel Fairfax’s imprisonment: loud broadcast voice over Chris Hopkins’ already speedy account is a big mistake.

Ainadamar - meaning "fountain of tears" in Arabic – is the name given to a natural spring high in the hills above the Andalucian city of Granada, the site where the poet and playwright Federico Garica Lorca was executed in 1936 during the Spanish Civil War. It’s also the name – and an apt one in many ways – of Argentinian composer Osvaldo Golijov’s extraordinary 2003 one act opera which tells the tale of Lorca’s life and death through a series of flashbacks.

In usual circumstances, a fully staged opera and every voice-and-piano song-cycle by a single genius in one weekend would be an embarrassment of riches. The only problem about Britten hitting the heights, above all in setting toweringly great poetry by Auden, Blake, Donne and Hölderlin, at the top of a long list, meant one sitting and squirming at most of Ronald Duncan’s wretched lines for an opera which even in its very subject is problematic, The Rape of Lucretia.

During the final act of Tamerlano, James Conway’s new production for English Touring Opera has the titular tyrant lead a captive king around the stage on a chain. Given the oppressive, deadlocked mood of Handel’s opera and this interpretation, you may recall Pozzo and Lucky in Beckett’s Waiting for Godot: that frozen dialectic of master and slave in which power traps its holder as much as its victim.

Though billed as a “concert performance”, this was really much more than that. With the resources of their own theatre, Opera North’s team present a staging that employs a big, built-up and raked floor, with a simple platform in the centre and a starry-night black back-cloth, and their principals and chorus move and act in simple but effective style.