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.

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.

By the time silence descends on the Royal Albert Hall at five o’clock in the afternoon for a performance that will end six hours later, Semyon Bychkov will have been rehearsing for 60 hours. It breaks down into four days of orchestra readings, with tutti and sectional sessions for each act, then two days of the singers and a pianist, followed by six days of everybody together. And all for one performance of Tristan und Isolde with the BBC Symphony Orchestra.

It only takes a few great Lieder by Schumann and Liszt to show the kinds of songs Wagner didn’t, or couldn’t, write. Very well, so the rarities in this programme were whimsies he composed in his youth, but even the Wesendonck Lieder, sole voice-and-piano masterpieces of his maturity, don’t show much concern for the little details of humanity. Fortunately Janice Watson rose to great form to show us what, quite apart from the two "studies" for Tristan und Isolde, their opulent generalities are all about.

"This," Lizzie Graham writes in the programme book of the current Longborough Festival, “is definitely the test of whether or not it is possible to put on a convincing Ring in a small, privately-owned country theatre.” I don’t think Lizzie or her husband, Martin, the festival’s founders and owners of the theatre, can have seriously doubted that the answer would be yes. Serious doubts seem not to be part of their entrepreneurial make-up; or if they are, they suppress them.

Newcomers to this ongoing Ring cycle would be wrong to imagine that a series of semi-staged concert performances represent a downsizing, a half-hearted stab at Wagner production. The decision to perform the operas in Leeds’s vast Town Hall was made in part for practical reasons, namely that the Grand Theatre’s orchestra pit is too small to accommodate the large forces required. One or two minor niggles aside, Opera North’s approach has been a consistent triumph.

With the Albert Dock just a few hundred yards down the road, and Liverpool the launchpad for two centuries of Atlantic crossings, it’s perhaps not too shocking to hear Wagner’s intercontinental Ride of the Valkyries resound round Philharmonic Hall.

Those who knew the composer Jonathan Harvey, who died of motor neurone disease last December, will remember him as the least demonstrative, least theatrical of men. His presence was gentle, soft-spoken, essentially inward – the physical image of the Buddhism that came to dominate his spiritual consciousness in the latter half of his life. That so intensely pure-minded and modest a musician should have been fascinated by a genius as ostentatious and self-advertising as Wagner is one of those attractions of opposites that are the stuff of art.