Revelations in the classical year never stop coming. Even the week before Christmas yielded two performances as good as you're going to get: the sheer effervescence and light-flourishing of Lucy Crowe in ecstatic Bach and Mozart with La Nuova Musica, and Sheku Kanneh-Mason in Haydn's C major Cello Concerto. So any sifting of 2016's musical riches needs to put the truly one-off packages at the top of the list.

John Adams, let's face it, was the reason many of us came to hear the St. Lawrence String Quartet. Their performances and recordings as dedicatees of his labyrinthine First String Quartet and Absolute Jest, in which the four players function as soloist with orchestra, led to high hopes for the UK premiere of a second quartet. As it turned out, the yield was smaller beer than expected. What really hit home, for those of us who don't spend as much time as we should with the first and most varied quartet canon in the literature, was an early Haydn masterpiece.

"Total immersion", the term used for the BBC Symphony's one-composer days, takes on a whole new meaning in the Thames Tunnel Shaft now transformed – but fortunately not subject to makeover – under the mantle of Rotherhithe's Brunel Museum. All the more so with the pioneering Modulus Quartet, who presented the mostly consonant music of six collaborative composers with the main lights out, shifting colours on the performing space and films either to accompany three of the works or to let the creators speak in short, unpretentious introductions.

More than just a great and serious pianist, Leif Ove Andsnes is a Mensch. His special gift in recent years has been to bring young musicians just establishing their careers together with star players like himself in beautiful and/or interesting places. I feel privileged to have heard him and his juniors in a programme of rare Sibelius melodramas in Bergen, Kurtág and Liszt in the main room of Grieg's humble home at Troldhaugen, and two shared recitals linked to the revelatory exhibition of little-known Norwegian artist Nikolai Astrup at Dulwich Picture Gallery.

All the best festivals develop organically, with a guiding hand from the best directors. When I first came to the East Neuk Festival two years ago, on its 10th anniversary, it was already a special case, thriving on the spirit of place and including an all-day Schubertiad from top international artists, many of whom were returning because they loved this special peninsula of the Fife coast so much.

After a grey start, there was a spectacular sunset around midnight on the second of my two days in Reykjavik. It's what brings one of Iceland's most brilliant younger-generation talents, pianist Víkingur Ólafsson (and yes, he's worked with Björk), back to his homeland every June. He launched Reykjavík Midsummer Music in 2012, the first full year of programming at Olafur Eliasson's ever amazing Harpa concert halls and conference centre on the harbour.

Some chamber ensembles flourish through creative conflict, contrast and tension. Others streamline their approach, not so much relinquishing individuality as allowing the best of each to blend into more than the sum of their parts. The Trio Shaham Erez Wallfisch has grown, in its five-year existence, to be one of the latter.

It was a simple yet beautifully elegant way for the Scottish Chamber Orchestra to kick off its 2016 chamber concerts: a recital for flute, viola and harp, with Debussy’s beguiling Sonata as the centrepiece, and other contrasting music for the same trio orbiting around it.

Please, sir, I want some more. Will Tuckett and Alasdair Middleton's Elizabeth is soul food for the hungry dance fan; an ingenious blend of words, music and dance that beguiles and entertains in equal measure. The shame is that it will be seen by so few people: created in 2013 for a special performance in Greenwich and now restaged for a week's run in the Royal Opera House's Linbury studio theatre, it will reach a total audience of mere hundreds – but I'd back it for a month or more, and to be a huge hit with theatre-goers as well as dance-lovers.

It was a sad coincidence that this Monday Platform “showcasing talented young artists” took place only weeks after the death in a road accident of Roderick Lakin, Director of Arts for 31 years at the Royal Over-Seas League which was last night's backer. For no concert could have been more sensitively tuned to a personal farewell. Overt melancholy only surfaced in the slow-movement theme of Brahms’s Second Piano Trio. But wouldn’t you want Dowland, Bach and Schubert at your memorial concert?