A masked ball is a time of play and role-play, celebrating the duality, the conflicting selves within us all, allowing us to set aside our everyday public mask put on an alter ego for the evening. It seems appropriate then that Verdi’s Un ballo in maschera has a deep fissure running down the middle of its drama. Is it a fragile, unfulfilled love story – Rattigan or David Lean with an Italian accent and rather more blood – or is it an exuberant piece of gothic horror with a love story and political agenda tacked on?

Cendrillon is Jules Massenet’s operatic version of Cinderella, based on the Charles Perrault story of 1698. It is a fairly faithful to the story we know, although it includes a dark third act, the scene after the ball, where Cendrillon attempts suicide. But, of course, the spirits intervene, and all ends happily.

What is the perfect country house opera? A Midsummer Night’s Dream? L’elisir? Cenerentola? Figaro? All are strong contenders, but in the absence of anyone brave enough to stage Gerald Barry’s The Importance of Being Earnest the winner – surely – must be Falstaff.

Productions of The Marriage of Figaro tend to press their thumbs on the comic or tragic side of the scales that hover so evenly throughout Mozart’s inexhaustible work. Director Martin Lloyd-Evans mostly favoured a darker interpretation at The Grange Festival, despite long stretches of niftily managed funny business.

Singer Ian Bostridge once described The Diary of One who Disappeared as “a song cycle gone wrong”. But this reimagining of it as an opera, by the Belgian director Ivo van Hove at the Royal Opera’s Linbury Theatre, also goes wrong, throwing in various extras which detract from rather than enhance the piece’s impact. I am no stranger to being baffled in an opera house.

The whole raison d’être of the Longborough Festival was always the performance of its founder Martin Graham’s beloved Wagner.

"Waiting is always wearisome," declare the socialites as glitter-and-be-gay Manon Lescaut receives in the home of her nasty old "protector" Geronte. Despite the numerous sugar-plums Puccini weaves into his first fluent operatic masterpiece, waiting is very wearisome in the first half of Karolina Sofulak's new production for Opera Holland Park.

It is a coincidence - and probably no more than that - that Garsington Opera has opened its 30th birthday season with the “founding work of modern Czech opera” in the year that also marks the 30th anniversary of the Velvet Revolution in Prague.

All happy 18th century couples are alike, it seems, and that makes for a certain placidity in Gluck's pastoral Bauci e Filomene for the (unhappy) wedding of Ferdinand, Duke of Parma and Maria Amalia, Archduchess of Austria. All unhappy couples are unhappy in different ways, especially if the marital misunderstanding takes place when you're bringing your wife back from the land of the dead.

Flirtations and fragile alliances, lies, betrayals, schemes and the ever-present promise of sex – Love Island may be back on our screens next week, but it has nothing on Handel's Agrippina. Imperial Rome is the backdrop for one of the composer’s most deliciously cynical comedies, where love is an afterthought and power is the only game in town.