Let’s set aside, to begin with, the question of the concept, other than to praise it as consistent. Most vital about this brave new Rheingold is the vindication of director Barrie Kosky’s claim that “what makes a Ring production interesting is the detailed work within the scenes between the characters”. With a conductor as intent on clarity and meaning as Antonio Pappano, and a true ensemble of performers willing to go along with him and Kosky, the battle is three-quarters won.

This was one of the more strait-laced concert performances, with few concessions to Wagner’s underlying stage drama. The soloists were in formal concert dress, strung out in a line at the front of the stage, with interaction between them limited to looks of anguish and the sparest of gestures. The shepherd boy in Act 1 was banished to the upper reaches of the organ gallery, and there was a substantial off-stage band in Act 2, but otherwise there was nothing to distract us from the music.

Götterdämmerung is not only the grandest of Wagner’s Ring operas, it is also the most varied. Siegfried’s journey down the Rhine transports him in a short quarter-hour from the hieratic world of the Norns and the World Ash to the soap-opera of the Gibichungs and their anxieties about marriage and political standing (opinion polls?).

All that glitters, titular treasure included, is dangerous childsplay in Richard Jones’s third UK staging of what Wagner called the “preliminary evening” to the three main operas of The Ring of the Nibelung. It’s nothing like the previous two, for the Royal and Scottish Operas, in some ways disconcertingly minimal and occasionally ugly to look at. Yet everything adds up and unlike the cast for his Valkyrie, this team has the perfect mix of vocal and acting gold.

It’s always a disappointment when the Venusberg orgy Wagner added in 1861 to his original, 1845 Tannhäuser to suit Parisian tastes gives way to foursquare operatic conventions. Especially so in this revival of Tim Albery’s 2010 production, where Jasmin Vardimon’s choreography (pictured below) seems executed with more brilliance than ever and post-viral vocal problems loomed large last night for this hero.

Roger Norrington: The Complete Erato Recordings (Erato)

It is mid-way through the new Ring cycle, and we are taking lunch outside the old town hall on the high street in Bayreuth. Discussion at neighbouring tables is intense: “The Ring is a child!”, “Why does Wotan have no spear?”, “The pyramid in the box – what is that all about?”

Could this be the summer Bayreuth finally sees a new Ring production that comes anywhere near its last great epic success, Harry Kupfer’s, which ran from 1988-92? If so, it’s been pipped to the post by a rather more comfortable and bijou opera house on the other side of the lake to the refuges where Wagner worked on more masterpieces – beautiful sites both, even if the “asyl” next to the Villa Wesendonck is no more..

He’s the most haunting, at times terrifying Wozzeck I’ve seen, in Richard Jones's Welsh National Opera baked-bean-factory production, and the funniest Falstaff. When we met in his dressing room at the Zurich Opera House, Christopher Purves was about to perform the central role of bitter and twisted Alberich in Wagner’s Das Rheingold, and in a week’s time you can hear him singing Handel again, another speciality at the other end of the spectrum.

Wagner, in his medievalist, pan-European, 19^th century way, wanted Parsifal to be a blend of abstract and religious experience for his audiences at Bayreuth, calling it a “festival play for a stage consecration”. Questions for those performing it today include how to do justice to its philosophical baggage as well as its marvellous music, and whether to introduce new elements in the visual staging that the composer never thought of.