Praise be to Carl Nielsen. Praise always, of course, to one of the greatest symphonists, and happy 150^th birthday (again), but gratitude on this occasion is due to a programme mostly lining up Nielsen works rare and familiar, for getting me to the Albert Hall to witness a surely unsurpassable performance of the Brahms Violin Concerto.

A second night of Sibelius symphonies at the Proms, packed to the rafters just like its predecessor. Exit Thomas Dausgaard, the tuba needed for the first two symphonies but not for the Third or – surprising given its pervasive darkness – the Fourth, and the air that had billowed around supremely supple performances. Enter Ilan Volkov to bring too much dark earth and inorganic point-making at first, though the BBC Scottish Symphony Orchestra, its strings sounding tougher if less inward from a different point in the hall, was still on world-class form.

A packed Albert Hall told an instructive story: programme Holst’s The Planets at the Proms and you can dare to do anything in the first half. Besides, though it will be a red letter day when we don’t have to put “women” in front of “conductors”, the Marin Alsop Last Night effect may have kindled interest in Susanna Mälkki, top of a still too-small list from the two concerts I’ve heard her give with the BBC Symphony Orchestra.

Violinists either fathom the elusive heart and soul of Elgar’s music or miss the mark completely. Canadian James Ehnes, one of the most cultured soloists on the scene today, is the only one I’ve heard since Nigel Kennedy to make the Violin Concerto work in concert, in an equally rare total partnership with Elgarian supreme Andrew Davis and the Philharmonia. Last night he found the same emotional core in the Violin Sonata at the end of a colossal programme with a no less extraordinary but much less widely known companion, the American pianist Andrew Armstrong.

There's a whole fairytale backstory to be told here. The residents of Saffron Walden and the surrounding area still can't quite believe their good fortune. The North Essex town and its state secondary school have been gifted a new 730-seat concert hall with a fine acoustic by a philanthropist with twin passions for state education and classical music.

Bass lines were Edward Seckerson’s starting point yesterday in welcoming the Berlin Philharmonic Sibelius cycle to London, and none strikes more terror from the depths than the subterranean growl that launches the most selectively-scored symphony of the 20^th Century, the Fourth.

Offshoots of the Venezuelan El Sistema’s worldwide dissemination as well as other youth and music projects continued to bloom and grow in 2014. The morning after what was the orchestral concert of the year for many who caught it, Alexandra Coghlan (see below) and myself included, players of the European Union Youth Orchestra reconvened in the Albert Hall to workshop three classics with musicians from nine British youth orchestras and London schools.

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.