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.

Leonard Bernstein once said that his favourite piece of Stravinsky was whatever one he happened to be listening to. I have a similar feeling about Mozart piano concertos: I love them all in their turn, and last night I heard Mitsuko Uchida bring two of the greatest of them to life, as pianist and director, alongside the Mahler Chamber Orchestra.

Thomas Søndergård stood in for this concert at a day’s notice – Valery Gergiev is apparently recovering from a knee operation and unable to travel. He left behind a curious programme, centred around Prokofiev’s quirky but dour Sixth Symphony. It’s a difficult work to schedule, but Gergiev added two sweeteners, Tchaikovsky’s Romeo and Juliet and First Piano Concerto. Søndergård clearly has the measure of all three works, and all came off well, making this concert, his first appearance with the London Symphony, an impressive debut.

Has any living pianist had a richer or more charmed life than Idil Biret? As a child prodigy she studied in Paris with Nadia Boulanger and Alfred Cortot, and both there and in Germany with Wilhelm Kempff. At the age of four she was reproducing Bach Preludes and Fugues on the family piano in Ankara simply from hearing them on the radio. When she was seven the Turkish Parliament passed "Idil's Law", enabling not her but also other gifted children to study abroad.

For a BBC Radio 3 lunchtime's hour of music, cellist Steven Isserlis's latest collaboration with that most individual of pianists Olli Mustonen went astonishingly deep. The surprises were equal in its two halves - the first a through-conceived programme of shortish late Schumann pieces plus a Schumann homage composed by Mustonen the composer for Isserlis and poetically embedded in the sequence; the second an interpretation of Prokofiev's late Sonata for Cello and Piano which scotched with high, focused drama the usual claims that this is a light and simple work.

Writing for two pianos is something that – until last year – I had not attempted. I was contacted by Katya Apekisheva and Charles Owen, two pianists who have performed as a duo for many years, asking me to compose a duet for them to perform at the inaugural London Piano Festival. I met Charles back in 2014 when he performed my pieces A Hudson Cycle and Fast Stuff in New York. Time constraints led me to restructure and rewrite an existing piece in my portfolio, Fast Cycles, which I wrote for the late John Scott.

Soft power in the shape of cultural ambassadors can go a long way. With a little help from its big guns in banking and industry, Germany has given this year's Proms no less than four of its major orchestras – from Leipzig, two from Berlin, and now from Dresden: all the more reason to wave those EU flags on a typically international Last Night in three days' time.

Istanbul six weeks before the failed coup, the south-west coast of Turkey six weeks after: what's the difference? None that I could see; once past the Turkish Airlines flights, with literature and screen full of the "People's Victory", there was no sign of it at the D-Marin Classical Music Festival on the Bodrum peninsula, centred around the marina in Turgutreis, a 45-minute drive along a very built-up coastline from once-quiet Bodrum.

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.

It's not so long since Daniel Barenboim sat around a table with Israeli officials telling him that Wagner couldn't be played in the homeland when someone's mobile fanfared the "Ride of the Valkyries", demolishing the opposition's case. At the opposite end of the scale to all that flash of battle-lust came last night's unexpected first encore to a Wagner second half – the Act Three Prelude to Die Meistersinger von Nürnberg.