In one way, it makes sense to give your London comeback concert in the venue where you made your European debut 44 years ago. Yet the Royal Festival Hall is a mighty big place for a violin-and-piano recital. Kyung Wha Chung had no problem nearly filling it last night with an audience including whole Korean families, but might have wished she hadn’t in the ailment-ridden dead of winter; her look could have killed a coughing child ("go and get a glass of water" is what I think I heard her say, from my very distant seat).

As I sat, engaged and occasionally charmed but not always as impressed as I’d been told I would be, through violinist-animateur Richard Tognetti’s lightish seven-course taster menu of string music with the Orchestra of the Age of Enlightenment, it was worth bearing two things in mind. One was that this happened to be merely the official zenith of a truly enlightened three-part project; on Monday, parts of the programme had been played first to educate all ages and later to grab a young audience in more relaxed mode as part of the OAE’s pioneering Night Shift series.

Next week, the 28-year-old Russian-born violinist Alina Ibragimova will step into a studio, to record some of the most technically unforgiving works in her instrument's repertoire, the solo sonatas by the Belgian violinist, composer and conductor Eugène Ysaÿe (1858-1931). She has just performed them over two evenings at the Royal College of Music.

It seems that the gradual leakage of avant-garde-post-classical-call-it-what-you-will music from the rarefied environment of concert halls and into the spaces traditionally inhabited by alternative and club music is now inexorable. And violinist Aisha Orazbayeva is one of the instrumental (pun intended) figures in this move from trickle to flood.

Depth, height, breadth, a sense of the new and strange in three brilliantly-programmed works spanning just over a century: all these and a clarity in impassioned execution told us why the BBC Symphony Orchestra was inspired in choosing Finn Sakari Oramo as its principal conductor.

Valery Gergiev once described Yevgeny Svetlanov’s USSR - later Russian - State Symphony Orchestra to me as “an orchestra with a voice”. Then Svetlanov died and the voice cracked. Which are the other big Russian personalities now? Gergiev’s own Mariinsky? I don’t hear it. Yuri Temirkanov can still bend the St Petersburg Philharmonic Orchestra to his own whim of iron. The Russian National Orchestra was never in the running. But the Tchaikovsky Symphony Orchestra of Moscow Radio, to give its full title, still sounds as deep and rich as it did when I last heard it live nearly 30 years ago.

When I last saw Vadim Repin in action, he was premiering a work of terrific energy and invention which is here to stay, James MacMillan's Violin Concerto. Tonight in Birmingham and on Monday at the Royal Festival Hall he is back on familiar territory with old friends – Vladimir Fedoseyev and the Tchaikovsky (formerly the Moscow Radio) Symphony Orchestra - in one of the pieces which brought him world recognition at 17 as among the handful of truly great violinists in the world today, the Tchaikovsky concerto.

The Polish composer Miecyzlaw Weinberg - his Holocaust opera The Passenger caused quite a stir in David Pountney’s premiere staging - has a new champion. The talented young German violinist Linus Roth has taken his music and his legacy to heart in a big way. New recordings of the complete Sonatas and the little-heard Violin Concerto (in a coupling with the Britten Concerto) on the enterprising Challenge label reveal a composer of many facets and a deep and abiding conviction.

Oslo is a winter wonderland, and adults seem to be outnumbered by children, flocking from all over Norway to Disney on Ice. It’s the deep snow and the silence in pockets of the city rather than the kids which make me wonder if anyone has set Handel’s Alcina in the icy lair of C S Lewis’s White Witch, with hero Ruggiero as Edmund fed Turkish delight from the magic phial. There's even a captive lion. Francesco Negrin’s straightforwardly magical production - look, no metatext!

In Leopold Mozart’s old house (now a museum) in the Bavarian city of Augsburg a piano tuner is hard at work tuning one of the working exhibits - a venerable clavichord. Enter Reinhard Goebel and Mirijam Contzen whose new Oehms Classics recording of the six Mozart violin concertos with the Bayerische Kammerphilharmonie is sure to stimulate lively debate and maybe even raise eyebrow or two in the coming months.