Philip Glass is sufficiently famous that his 75^th Birthday celebrations have been going on all year (he was actually 75 in January) and the year saw two of the absolute highlights of his career presented at the Barbican. His first opera Einstein On The Beach and last night, the soundtrack to his first film score Koyaanisqatsi, performed alongside the film itself, with Glass on keyboards. More of his “greatest hits” will be performed at the Union Chapel in Islington tonight.

If you’ve ever wondered what a bad day at the office looked like for Handel then look no further than Belshazzar – an oratorio that positively demands heavenly intervention and possibly a bit of smiting. With a first act that worried even the composer with its length, a confused magpie plot and a libretto whose worst excrescences outdo even those of Congreve’s Semele, it’s one of those neglected works that gain little by being dragged out into the light, even by such distinguished champions as William Christie and Les Arts Florissants.

Why so much of Vladimir Jurowski and the LPO on theartsdesk, you may ask, when other concerts pass unremarked? The answer is simple: quite apart from the immaculate preparation and the most elegant conducting style in the business, Jurowski programmes with an imagination matched by none of London’s other principal conductors – unless you like lots of Szymanowski served up by Gergiev with lumpy Brahms – and, more important, always finds connections.

Say what you like about America, but it certainly knows how to turn out an opera diva. While the Russians and even Italians can be chilly and untouchable in their splendour, there’s a cultivated ease with the likes of Renée Fleming and Joyce DiDonato that allows a song recital to be both a relaxed conversation with an old friend and a piece of highly crafted technical showmanship. It’s artifice and artistry of the highest order – not just making it all look easy, but showing us just enough mechanics to prove that it definitely isn’t.

What if Handel, after his death, descended to an eminently civilised afterlife, where he spent his time making music and new friends with the likes of Beethoven and even Jimi Hendrix? That’s the premise of Louis de Bernières’ new play Mr Handel, a show that brings the author himself together with baroque chamber group The Brook Street Band and soprano Nicki Kennedy in a gentle meander through the life and works of baroque’s finest.

Her Majesty was making a rare concert-hall appearance to present the Queen’s Medal for Music, and any little Englanders in the audience might have been tempted to link royalty to Elgar’s Enigma Variations. But conductor Robin Ticciati, with a generosity and wisdom beyond his 29 years, raised this orchestral masterpiece to the universal level it deserves. Elgar’s "friends pictured within" trod air and revealed every aspect of their often shy, beautiful souls.

The billing for this all-Schubert concert, "Spira Mirabilis and Kate Royal", was a little misleading, since they did not actually share the stage at any point, the two halves being clearly separate events. First came the hour-long Octet, played by members of Spira Mirabilis, followed by half an hour of songs with Kate Royal accompanied by Malcolm Martineau.

Now the BBC Symphony Orchestra’s second Conductor Laureate, Jiří Bělohlávek was always going to deserve a hero’s welcome for taking his players to the finishing line of their six-year cycle through Mahler’s symphonies. As more superficially brilliant Mahler series like Gergiev’s, squeezed into a single anniversary season, seem a distant memory, many of Bělohlávek’s slow burn, deep vein interpretations live on in the mind and soul.

Arditti String Quartet, Wigmore Hall, 31 October ****

November is always a good month for new music. This year saw the interest begin a day earlier. Whichever wag chose to hand over Halloween at the Wigmore Hall to two of the most uncompromising contemporary string quartets, however, was denied a fitting punchline. The young JACK Quartet were grounded in New York by Sandy, and the venerable Ardittis chose to programme works that weren't half as terrifying as hoped.

Oliver Knussen: Violin Concerto etc Various artists/Oliver Knussen (NMC)