Her special claim to fame was the most luminous pianissimo in the business, but that often went hand in velvet glove with fabulous breath control and a peerless sense of bel canto line. To know Maria de Montserrat Viviana Concepción Caballé i Folch, born in Barcelona 85 years ago, was clearly to love her. I never did (know her, that is), and I only saw her once, in a 1986 recital at the Edinburgh Festival. By then she was careful with her resources, but the subtly jewelled programme delivered on its own terms.

Everything is political in the world's current turbulent freefall. The aim of Riccardo Muti's "Roads of Friendship" series, taking the young players of his Luigi Cherubini Youth Orchestra to cities from Sarajevo in 1997 to Moscow in 2000 and Tehran last year, has simply been "to perform with musicians from different cultures and religions" in a community of peace.

Alzira is Verdi’s shortest opera and his least performed, and you have to ask why.

One wearies of quarrelling with opera directors’ concepts. But what’s the alternative? To ignore or acquiesce in crude, approximate reimaginings that, like Daisy Evans's new La Traviata at Longborough, stuff a work any old how into some snappy, after-dinner parody that says nothing useful about the piece, vulgarises the situations and confuses or misrepresents the text. 

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.

You don't have to be a good director to manage the artistic side of an opera house. Daniel Kramer arrived at ENO and boosted morale at a time when company relations with then-CEO Cressida Pollock had hit rock bottom, and his repertoire choices for the new limited seasons look fine so far.

You’d expect a degree of mischief and bafflement in an opera about mistaken identity, closing with a scene set at a masked ball. But Tim Albery’s new Opera North Un ballo in maschera is confusing for the wrong reasons, its shortcomings all the more irritating compared how good the performance actually sounds.

David Pountney’s tenure at WNO has been an almost unqualified success, despite some eccentricities of repertoire and a certain obstinacy in the matter of new commissions. His own productions have included at least three of unforgettable quality. He has vigorously promoted money-saving co-productions like this one with Theater Bonn.

Commentators have, over the years, variously described Un ballo in maschera (A Masked Ball) as all things to all people: Verdi’s Tristan und Isolde, Verdi’s masterpiece, Verdi’s Don Giovanni, a pure love poem, and much more. It seems to me to be one of his most consistently exciting works, perfectly proportioned and dramatically astute.

Remastered they may be, but the 20 live operas recorded here between 1949 and 1964 vary soundwise from clean at best to atrocious, with all the caprices of stage noise and audience participation seemingly acceptable at the time (so often there's the shouting prompter who seems duty bound to cue everything – even interjecting a loud libiamo! in the silence before the voices kick in for La traviata's Brindisi).