It’s statement of intent to open your first British headlining show with a 15-minute version of an album track which lasts a minute and three-quarters – from an album which itself lasts barely more than 30 minutes. And then to riff on it, incorporating elements from a debut album which barely anyone beyond your native country has heard. In taking her current album No Deal’s “I Feel You” and merging it with A Stomach Is Burning’s “A Stomach”, Belgium’s Melanie De Biasio could have alienated an audience who had never seen her before.

Of all the epithets you could pin on that roast beef of Old England, William Boyce, “gamechanger” is one of the more unlikely. Like any good 18^th-century Englishman, this composer followed the widespread Italianate model of the late Baroque, infused it with Handel, and a swig or two of Purcell, and just got to work. Latterly he spent far too much time setting toadying odes for Britain’s Hanoverian kings; no chance for revolution there. 

A voluptuous dream in sequined silver, the nearly-27-year-old Georgian pianist Khatia Buniatishvili sat down at the keyboard and instantly transcendentalised her mermaid look as Ravel’s Ondine. Even Brahms took to the life aquatic of her recital’s first half. For the second, though, there should have been a costume change into a clown suit with a tatty tutu pulled over it.

Antonio Pappano addressed the audience before the start of the concert to explain the thinking behind this rather unusual programme, first performed in the early nineties and now a perfect fit for the Accademia Nazionale di Santa Cecilia orchestra and chorus, where he has been music director since 2005.

Am I alone in a readiness to sacrifice all four Rachmaninov piano concertos – though maybe not the Rhapsody on a Theme of Paganini – in favour of the second sets of Preludes and Études-Tableaux? Probably not, after last night, when Nikolay Lugansky unfurled the 13 Op. 32 Preludes as one discombobulating symphonic cosmos. This is probably as close as we can come today to being in the presence of Rachmaninov himself, the greatest recorded pianist I know.

Vladimir Jurowski is a master of the through-composed programme. Yet at first this looked like a more standard format: explosive contemporary work (if 1966 can still be called “contemporary”) followed by popular concerto and symphony.

Arise, Sir Edward – Gardner, not Elgar, whose First Symphony the former conducted last night. Well, maybe a knighthood’s too premature; although the daft honours system has rewarded others in the operatic world for less, and Gardner has already served two brilliant terms at Glyndebourne Touring Opera and ENO, there was just one aspect of the symphony that he didn’t seem quite to get last night.

Where did all the terrific programming energy of last year’s The Rest is Noise festival go? One answer – surprising given the orchestra’s former Friday night lite status – is into a two-concert adventure by the BBCCO. World to Come, World Once Known has been devised by Principal Conductor Keith Lockhart to reflect the Janus-headed phenomenon of music just before, during and after the First World War.

The newly restored Royal Festival Hall organ was inaugurated in a celebratory atmosphere with this gala launch concert, which also marks the beginning of the Pull Out All the Stops organ festival.

A voyage around Beethoven by Ives and John Adams, and then beyond him by Berlioz, added up to a vintage San Francisco Symphony programme from its music director Michael Tilson Thomas. Forty years on from his first concert with SFS, he’s still youthful in demeanour, still flapping with seagull (or albatross) like flamboyancy. But is there a chill behind the showmanship? I ended up feeling that way despite what should have been the ultimate cataclysm of the Frenchman’s concluding infernal orgy.