Leonidas Kavakos was originally meant to be premiering a concerto by Argentinian composer Oswaldo Golijov, which had also been scheduled for Berlin in 2011 and subsequently for Los Angeles in May this year. The composer missed both those deadlines and the work apparently remains uncompleted – it was replaced on the programme by the Berg concerto.

Some symphonies are natural curtain-raisers: Sibelius’ Third is one. Music began with rhythm and in this piece the cellos are the distant drummers who bring us back to basics with their curt opening measures. Osmo Vänskä clipped the rhythms are kept them on a tight rein - because he knows how this piece goes, how Sibelius’ search for new found economy and textural leanness lends the music an uneasy tension.

There are worse assignments than making a film about Nicola Benedetti, and the glamorous 25-year-old violinist had clearly entranced Lord Bragg. Mind you, you'd struggle to find much to dislike about her. She's funny and articulate and has a billion-watt smile, while being an utterly dedicated musician whose playing mixes technical command with potent emotional expressivess.

In a members-only bowling club, down a side street in a residential part of Glasgow I'd never visited before last night, Texan fiddle-player and songwriter Amanda Shires stood wearing the most magnificent pair of cowboy boots I had ever seen.

Musicians can go one of two ways after a period of prolonged professional absence. The hiatus can either set them free (Horowitz) or screw them up (Pogorelich). In the case of Maxim Vengerov, we already knew that the latter hadn't happened. A successful early reappearance with the St Petersburg Philharmonic at the Royal Festival Hall a few weeks back - where he stepped in for an AWOL Martha Argerich - proved that.

If Dr Frankenstein wanted to manufacture the perfect violinist, he’d require a long list of ingredients. Perfect, unfussy technique, of course; but also seriousness of purpose, a sense of humour, a clear head, a passionate heart, a generous tone, plus access to a Stradivarius. On the other hand, the good doctor could simply go out and find Julia Fischer, the 28-year-old German violinist who ticks almost all of the above boxes, except perhaps “sense of humour”.

Originally, this concert was to open with that mercurial wonder Martha Argerich playing an unspecified piano concerto. Then its first item became Martha Argerich not playing anything, for the good lady, almost as rare a visitor to Britain as the Man in the Moon, did what she’s famous for doing. She cancelled. Acting with award-winning panache, the Barbican then found a substitute artist who’s recently become even rarer, the violinist Maxim Vengerov. 

Critical, urgent, hard - those are the three words used about the challenge to get the rich to pay more for the arts by the new man at the tiller. He should know. Jonathan Moulds, European President at Bank of America Merrill Lynch, is one of the super-successful, super-wealthy financiers to whom the Cameron government is desperately looking to pick up the slack as they cut back public spending. What the government hopes for is modern-day Medicis - arts patrons who use their wealth to back orchestras, performers, theatres and educational projects - and lots of them.

It’s over 30 years since André Previn left his post as principal conductor of the London Symphony Orchestra. But once you’re part of the LSO’s treasured ‘family of artists’, the orchestra never lets go, year upon year inviting you back for Christmas, New Year, weddings, bar mitzvahs, any occasion going. The same with the violinist Anne-Sophie Mutter – briefly in the last decade Previn’s fifth wife, though they share the same platform with just as much ease now that they’re divorced.

Bartók: Violin Concerto No 2, Tchaikovsky: Violin Concerto Valeriy Sokolov Tonhalle-Orchester Zürich/David Zinman (Virgin)