Branding, as any marketing manager will tell you, is everything when it comes to selling, and when it comes to selling, classical music is no different from cars, cornflakes or shampoo. It explains why a Mahler orchestral song-cycle would fill the Royal Albert Hall while a similar work by his love-rival and near-contemporary Alexander von Zemlinsky last night left it half empty.

There is no reason why young musicians shouldn't make something special out of mature thoughts on mortality. Nor is the Albert Hall problematic when it comes to haloing intimate Bach as finely as it does massive Bruckner. The Gustav Mahler Youth Orchestra glowed in both the large scale and the small last night. Any shortcomings were in senior hands and hearts - possibly those of a usually great conductor, Philippe Jordan, more likely the infirm purpose of his composer, Bruckner. The most surprising disappointment of all came from that most prized of baritones, Christian Gerhaher.

The ingredients should be familiar by now. A plucky range of contestants drawn from across the geographic and social spectrum. A selection of interesting back stories. Demanding judges, their prickly edges softened by a fluffier presenter.

It began with opera – Cecilia Bartoli’s pretty much universally adored Norma from Salzburg. And the Edinburgh International Festival ended with opera, too – Mozart’s Così fan tutte, in a co-production with the Aix-en-Provence Festival. Like Norma, it was an updating to more modern times – but one that in this case prompted the International Festival to send out a letter warning of the production’s explicit adult content.

If ever there was a Prom to put London’s classical crowd in their place, to remind us (as those outside the capital so frequently and justifiably do) that the city isn’t the be-all and end-all of concert-going, then this was it. It featured three major debuts – all of them overdue, two of them musical hand-me-downs from Birmingham.

Beethoven: Symphonies 5-8 Copenhagen Philharmonic Orchestra/Lan Shui (Orchid)

He still looks every inch the golden boy, but Vasily Petrenko has just turned 40, and next month celebrates a decade with the Royal Liverpool Philharmonic. Time well spent, as this impressive evening revealed: after years of Russian immersion under his crisp command, here’s a band who can conjure Shostakovich’s smoudering darkness, and all the glitter and the grit in Rachmaninov’s third symphony.

If you go down to the woods today, to be sure of a big surprise is a contradiction in terms, but this pair of sylvan adventures by Matthias Pintscher and Mendelssohn was another example of the discreetly sensitive programme-building which has distinguished the present season of BBC Proms.

Some enchanted afternoon in Camden Town… the Proms returned to the Roundhouse after four decades with a dreamlike fusion of sound, space and light. Ron Arad’s Curtain Call – a 360° installation of 5,600 sillicon rods – encircled the London Sinfonietta and audience in its luminescent embrace, a haze of microtonal music slinking through a sequence of glimmering projections.

Remarkably, Pierre Boulez made his first appearance at the Edinburgh International Festival way back in 1948, at only the Festival’s second ever outing, in charge of music for director Jean-Louis Barrault’s production of Hamlet. He remained a regular visitor across the decades, and following his death in January, the EIF’s Pierre Boulez: A Festival Celebration was a late but clearly necessary addition to the Festival’s already bulging classical programme.