So for one last time this season the impossible colosseum of Albertopolis became the Wagnerian holiest of holies – to be precise, the Cathedral of the Holy Grail - and once again I fell in love with the beast transfigured. Justin Way, the one artist common to all seven Wagner operas as their subtle semi-stager, should be the delegate to receive the award the Proms deserve for highest achievement of bicentenary year; and it seemed right to have Sir John Tomlinson, albeit by dint of another bass’s indisposition, giving his benediction as the witness of a final miracle.

The visits of the Gustav Mahler Jugendorchester are a regular Proms highlight, only preceded (for me) by the John Wilson Orchestra in the speed with which they go from announcement to diary. Last year’s concert under Gatti was a whirling celebration of dance – a beautifully programmed narrative that spun us from Wagner to Ravel and left us breathless. The year before Tchaikovsky and Rimsky-Korsakov brought us passions from East and West, united by the precision of Sir Colin Davis.

Rachmaninov: The Bells, Symphonic Dances Rundfunkchor Berlin, Berliner Philharmoniker/Sir Simon Rattle (Warner Classics)

Concert programmes are designed to make the mind flexible with constant contrasts. More often, though, the great is the enemy of the good-ish. Last night an Elgar masterpiece was always going to overshadow its second-half predecessor, a hazily pleasant piece for strings and – novelty value – six harps by the colleague Elgar called “dear old Gran”, candidate for this Proms season's resuscitation attempt Granville Bantock. And earlier, Sibelius bopped a BBC commission on the head with supernatural noises that could have been conjured yesterday.

There have already been many musical tributes to Sir Colin Davis, whose death in April left us all so much the poorer, but last night’s from the London Symphony Orchestra was particularly and wonderfully poignant. Davis himself was originally scheduled to conduct the London Symphony Orchestra – an ensemble whose relationship with him extended back over 50 years – but was replaced, fittingly, by his protégé Daniel Harding. A planned Sibelius Second Symphony was exchanged for Elgar’s Symphony No.

Standing in the Albert Hall arena, critics’ notepad in hand, I felt rather like PC Plod taking notes at a crime scene. Only there was no serious crime to report in this engaging late-night Prom by the BBC Scottish Symphony Orchestra and its former Principal Conductor, Ilan Volkov – the ideal man to conduct music that isn’t by Brahms or Schubert.

In a couple of weeks Marin Alsop will become the first woman ever to conduct the Last Night of the Proms. Yesterday's programme of 19th century works by Brahms and Schumann, on the fifth of the eight Saturday nights of the season, thus had its Proms-specific raison d'etre, a signpost towards that history-making final Saturday. Just as the last night's high jinks have their own, ordered traditions, the Proms planners definitely enjoy giving a self-referential logic to the season.

Jeremy Paxman’s beard may have been a wonder and a talking point for five days, but Michael Tippett’s opera The Midsummer Marriage beats it by almost 60 years. Ecstatic, visionary, energetic music, yes indeed. But, oh, the composer’s libretto! The Magic Flute, T. S.

The fascination of the East has been a constant in classical music’s history, from the jangling sounds of the Janissary bands to Mozart’s Seraglio, Sheherazade’s dreamy tales to Britten’s seductive gamelan. Last night’s Prom gave the East a chance to answer back, setting Nishat Khan’s new Sitar Concerto in dialogue with Vaughan Williams’s London Symphony – a musical portrait of a landscape rather closer to home.