It’s not a crowd-pleaser like Albert Herring, nor wittily fanciful like A Midsummer Night’s Dream or macabre like The Turn of the Screw and certainly not the classic that Peter Grimes has become, and until three years ago Glyndebourne had never even staged Britten’s Billy Budd. But Michael Grandage’s 2010 production was a sea-changer. Aided by Mark Elder in the pit, the director made his operatic debut with devastating simplicity, reminding us all of the power of this uneasy tragedy.

On the one occasion I went to Bayreuth, I made the mistake of seeing The Flying Dutchman and Lohengrin after the best of Ring cycles. At the Proms we’ve had a week of serious Wagnerian withdrawal symptoms, so Tannhäuser was never going to feel like too much or too little of a good thing. In any case, this always fascinating if dramatically primitive early clash of sex and religion is shot through with later passages composed in between work on the Ring, most of them included in last night's 1875 hybrid version.

And so Wotan’s ravens flew home and at the twilight’s last gleaming the immortals were consumed by fire and water. All was finally and irrevocably redeemed by the power of love, and the most beautiful of all the leitmotifs in Wagner’s Ring rolled out across the Albert Hall like a benediction. It was a defining moment in Proms history, no doubt, and was greeted with a few moments of perfect - and I mean perfect - silence.

Such has been the justifiable flow of superlatives this week about the Berlin Staatskapelle's Ring conducted by Barenboim, the centrepiece of the BBC Proms' Wagner bicentenary celebration, it would have been easy to forget that the 2013 Proms season contains not just those four, but seven complete Wagner operas.

The transformative power of the Royal Albert Hall at Proms-time never ceases to amaze me.

Garsington Opera, now based at John Paul Getty’s countrified home, the Wormsley Estate near Henley, has nipped a leaf out of Glyndebourne’s book and embarked on its first full-blooded Community Opera: a far cry from Vivaldi and Rossini, but not from Janáček (Garsington will stage The Cunning Little Vixen next season). Road Rage has a shiveringly well-turned, witty, singable text by Sir Richard Stilgoe, and a score by Orlando Gough, who was behind Glyndebourne’s big hit Imago.

Things may be falling apart, a storm now rages but new broods of humans and demigoddesses have been fathered by chief god Wotan, who has undergone a Doctor Who like transformation from Iain Paterson into Bryn Terfel.

Swimming around in the Rhine is what most of us wanted to be doing on the hottest day of the year. A cooling, riverbed low E flat from Daniel Barenboim’s Berlin double basses, and then the staggered horn entries announced we were going to be in the finest sonic hands for two and a half hours  – or nearly 15, if the colossal Proms Ring is to be accounted in its full, four-night glory.

Having spent most of the summer on Wagner’s Ring, Longborough are now giving, as a kind of bergamasque, an opera whose entire length would fit into the first act of Götterdämmerung. La Bohème is everything The Ring is not. It is concise, melodious, playful, sentimental and weepy. Yet oddly enough, it could never have been written without Wagner. Puccini’s ears were open to every kind of influence, and quick to transform everything into a personal expression.

Richard Strauss’s lavish postscript to 50 years of music theatre is about so much more than the theme of its source, Salieri’s Prima la musica e poi le parole ("first the music and then the words", with a big invisible question mark). Its overall subject of rival claims in opera also embraces spoken drama, poetry, dance and specific bel canto, all of them marshalled by the most experienced of theatre directors. And a director is what this concert performance probably needed to bring its cast members into dramatic harmony.