It seems an almost indecent luxury to have heard two top mezzos in just over a week with so much to express, backed up by the perfect technique and instrument with which to do so. Georgian Anita Rachvelishvili with Pappano and the Royal Opera Orchestra the Friday before last only had to hold the spell through a Rachmaninov sequence in the middle of an all-Russian concert.

Harpers on the undeniably offensive aspect of Wagner the man might question attending a concert performance of his second Ring opera on World Holocaust Day. Fortunately there's nothing anti-semitic to be found anywhere in Die Walküre.

Before we hear a note, extras dressed as maintenance staff potter about the stage. They try to erase a scrawled slogan on a wall that reads “Hur allt började”: how it all began. “It” is the story of Wagner’s Ring cycle as presaged in the introductory drama of Das Rheingold, which kicks off the tetralogy. Prior, though, to the ominous, mesmeric swell of the E flat chord that anchors the Rheingold prelude, Stephen Langridge’s production for Gothenburg Opera shows us a busy, dogged human world of toil.

Why are great Wagnerian singers the most down-to-earth and collegial in the world of opera? Perhaps you have to be to master and sustain the biggest roles in the business, ones which can't be performed in isolation, and a strong constitution helps, too. Birgit Nilsson, the farmer's daughter born in rural Sweden 100 years ago, had all those qualities and many more.

Two days after announcing his appointment as their next chief conductor (he takes the reins officially next summer, in time for the Proms), by remarkable good fortune the Manchester-based BBC Philharmonic was able to present Omer Meir Wellber as the conductor of their second Bridgewater Hall series concert.

And so it ends. Flames give way to water, and as the Rhinemaidens resume their naked dance we come full circle – quite literally in Keith Warner’s Wagner Ring – back where we began, on the banks of the Rhine. Once again we find ourselves on the brink – but of what? A young woman framed in the giant ring that descends in the music’s final moments suggests a hopeful new beginning, a new generation of heroes.

Siegfried is usually the problem with Siegfried. Even Stuart Skelton, top Tristan and currently singing an acclaimed Siegmund in this last revival of Keith Warner's rattlebag Ring, won't touch the longest, toughest heroic-tenor role in Wagner, the protagonist of his third opera in the tetralogy.

Perched alone and fearful in her hut as the curtain rises on Die Walküre, Sieglinde clutches and then throws aside a grimy teddy-bear. Story time is over. The nymphs and gold and bickering gods all belong in the past, to the ‘preliminary evening’ of Das Rheingold, or so Sieglinde might think. The real drama of Wagner's Ring begins here.

Keith Warner’s production of Wagner's Der Ring des Nibelungen was first seen at Covent Garden between 2004 and 2006, and is now back for a third and final series of full runs, chiefly to catch the Brünnhilde of Nina Stemme in three of the operas, continuing into November.

It is a pleasure to report on the continuing success of the Saffron Opera Wagner project. The organisation was formed in 2013, and since then has presented concert performances of the Ring cycle and Meistersinger, and now Parsifal, all with an amateur orchestra and chorus and a cast of mostly lesser-known professionals.