We’ve had more than our fair share of Beethoven symphonies in London recently. But with the Proms’s monolithic Daniel Barenboim cycle now midway through, memories of Riccardo Chailly and John Eliot Gardiner are being steadily blotted out. Gone are the frisky tempos, the lightness of touch, and in their place we’re being reintroduced to Beethoven the heavyweight. There’s majesty here certainly, and occasional moments of compelling originality, but also a fair amount of frustration.

Last night's concert performance of Berlioz's Les Troyens was not a Prom for the fainthearted. After all, if sitting through a five-hour opera had been a daunting undertaking for the Covent Garden audiences last month - who could also enjoy David McVicar's eye-catching staging - then it was inevitable that anyone seated in the Royal Albert Hall for the visually pared-down version was expecting to feel very culturally virtuous by the end of the night.

One top student orchestra playing on its own can be exciting enough. Two playing together can produce a charge of dynamite that might not leave the building standing. That was so anyway in last night’s Prom, when players from New York City’s Juilliard School and London’s Royal Academy of Music, by now frequent collaborators, joined up to shake the earth with thunderous brass, swooning strings, diamond precision, a velvet bloom – every characteristic of a world-class orchestra except the honour of being conducted by Lorin Maazel.

How silly an armchair looks in the Royal Albert Hall - like a rubber duck floating in the Pacific. Yet how right it was for those behind this excellent semi- staged Proms performance of Debussy's Pelléas et Mélisande to try to recreate a bit of fin-de-siècle intimacy for this most intensely intimate of operas. And how appropriate also for there to be a couch on stage in a work that is, and has always been, a psychoanalyst's dream.

“Let a woman in your life," roars Professor Henry Higgins, “and your serenity is through. She'll redecorate your home, from the cellar to the dome and then go on to the enthralling task of overhauling you.” It’s a scenario not unlike letting the winsome darling that is musical theatre loose among the club armchairs and smoking jackets of a classical music festival.

Two weeks to go to the Olympics, of course, but the Proms Olympics – 84 concerts in 60 days – have already taken off, with Britain placed first, second, third and fourth. For last night’s First Night concert was one where everything except Canadian singer Gerald Finley was British: the composers, the conductors (all four of them), the orchestra, certainly the weather.

The greatest music festival of them is once more upon us. Throughout our extensive coverage of last year's BBC Proms, we featured the remarkable work of photographer Chris Christodoulou. We have asked Chris to select his favourite pictures of conductors at work, and we present them again for your entertainment and enlightenment as the world's greatest conductors again take to the podium for the summer to show exactly what it takes to do what they do.

Born in Beckenham, Kent, in 1960, Django Bates is a self-taught composer and founder member of the seminal big band Loose Tubes (1983-1990). As well as leading his own groups, Human Chain and Delightful Precipice, he has composed works for the Brodsky Quartet, Joanna MacGregor, Evelyn Glennie, the Britten Sinfonia and the Dutch Metropole Orchestra, amongst others. In 1997, Bates was awarded the prestigious Jazzpar prize, known as the 'Nobel Prize of Jazz' (previous recipients include Lee Konitz, Roy Haynes and Geri Allen).

The 2012 BBC Proms open on 13 July and end on 8 September. This is the full list of the 76 concerts. Book tickets here.