"What I’m looking for is that fraction of a second that at least I could remember the concert by." At the start of the 2013 BBC Proms season, photographer Chris Christodoulou let theartsdesk into the secret of snapping conductors at work. Now that the Proms are over for another year, we publish not the official shots, but the ones which are simply too quirky to be released by the BBC press office. These images may not particularly flatter their subjects, but they do capture what it is to be a silent maestro magically conjuring sound from the massed ranks of an orchestra.

As it came to pass, Marin Alsop’s nationality was rather more of a factor than her gender on this historic Last Night of the Proms – but her deft put-down of remarks made only the week before (pace Petrenko) suggested that it might take a little more time (it’s only 2013, for heaven’s sake) for that glass ceiling truly to come crashing down and for her and others like her to be regarded as simply “conductors”.

This summer, the Royal Albert Hall became the centre of the Wagnerian universe. No one was going to ignore Bayreuth, where Frank Castorf‘s new Ring gave plenty of fuel for column inches; but somehow the singers and the orchestra seem to have got lost there among all the apparently uninterpretable stage paraphernalia. Here there was a unique context for the personenregie, the crucial relationships highlighted in Wagner’s many one-to-ones, as memorable as the spotlight on the music.

Tradition used to decree that the last Friday Prom would be devoted to worshipping Beethoven’s Choral Symphony. Not so today. Anything deemed serious and big occupies the slot, and if Bruckner’s Eighth Symphony isn’t serious and big, what do you want? A 40-tonne truck?

She’s the Kansas mezzo-soprano whose ruby slippers have now taken her across the globe, singing in all the great opera houses, but who has never lost the common touch. She’s not a diva, she’s a “Yankee Diva” – a contemporary creature who would never dream of throwing a tantrum or cancelling at short notice. She's Joyce DiDonato.

It’s not because I lament the annual end of a love-hate relationship with the Albert Hall that the last few days of Proms feel rather melancholy. A bittersweetness lies rather in the drawing-in of evenings, however hot it is, so late night Schubert for one and then two pianos seemed like an appropriately introspective way of saying farewell this year.

Marin Alsop may be one of America’s leading conductors, with stints as music director of the Colorado, Eugene and Richmond symphony orchestras, not to mention positions at the Bournemouth Symphony Orchestra, Royal Scottish National Orchestra, City of London Sinfonia, and of course her current roles at the head of the Baltimore and São Paulo State Symphony orchestras, but apparently none of that is as important as the fact that she’s a woman.

Purity and holiness filled the air. Boy choristers in red cassocks filed onto the platform. The BBC announcer, paraded soon after, promised “choral music to carry us into the after life”. Had I come to the right place? Was I attending my own funeral service? 

May I be permitted a rude, opinionated intermezzo between reflections on Vasily Petrenko’s two Oslo Philharmonic Proms, and before Marin Alsop steps up to great expectations for the Last Night?

The Oslo Philharmonic Orchestra made quite a splash with their Tchaikovsky symphony series under Mariss Jansons back in the 1980s. The watchwords then were freshness and articulation, a re-establishment of Tchaikovsky’s innate classicism - and so it was again as Vasily Petrenko stepped out as the orchestra’s new Chief Conductor. The opening of Tchaikovsky’s First Symphony sounded so light and articulate, so suggestive of clean, icy cold air, and the clarity that brings that the subtitle “Winter Daydreams” suddenly seemed a little vague.