Visits from the pick of Europe’s Baroque orchestras – Concerto Köln, Europa Galante, Le Concert d’Astree, Les Musiciens du Louvre – are a blissfully frequent occurrence in London, an alternative and supplement to our own ever-growing roster of period talent. A tour by a North American ensemble is, by contrast, something of a rarity, and I can’t have been alone last night in hearing the much-lauded Apollo's Fire (otherwise known as the Cleveland Baroque Orchestra) live for the first time. “Hearing”, however, rather fails to encompass the visually charged, minutely stage-managed musical theatrics on display from Jeannette Sorrell and her irrepressible team of musicians.

First, an admission. I have a blindspot for the chamber work of Fauré, Saint-Saëns and Ravel. I've tried my best, acquainted myself with the most stirring recordings of the finest pieces, got friends to hold my hand. But I've never been able to shake off the feeling that this French trio are mostly a bit drippy in this repertoire, a bit Watercolour Challenge, a bit I-eat-yoghurt-vote-Lib-Dem-and-faint-a-lot, engaging neither in psychology nor dazzle, all simply treading water. So last night was laser-eye-treatment time. If Steven Isserlis and his clever colleagues couldn't banish my blindness at their Wigmore Hall recital, no one could.

There is an excess about the Wigmore Hall’s Arts and Crafts cupola that lends itself to extravagant musical passions. The mural’s cloudy images may profess to picture music as an abstract creature, but the golden tangle of rays and warmly naked limbs make a rather more human case for its attractions. It was a case matched for persuasive enthusiasm (and significantly bettered for taste) last night by The English Concert and Alice Coote, in a programme of charged highlights from 16th and 17th-century repertoire.

Their oaky, cultured and selectively scary-wild playing seemed to cast long autumn shadows over a sparse but intent audience. This is the kind of rare programme top violinist Christian Tetzlaff, his cellist sister Tanja and friends like to work on when they get time to play together. There was Haydn for starters, but not the kind of jolly curtainraiser we're usually given; Dvořák, but not the blithe American; and Sibelius's Voces Intimae, the only great quartet of the 20th century yet to be widely acclaimed as such, with strange, authentic ideas in every bar and a slow movement to match any in Beethoven's late masterpieces.

To launch a music festival with the Arditti Quartet, as Bath has just almost done (a pair of dance events preceded them), is a bold enough gesture, if no bolder than for the Arditti to open up their Assembly Rooms concert with Beethoven’s Grosse Fuge – a finisher if ever there was one. But for this particular group, late Beethoven might well seem like a kind of starting point. Beethoven was the first to write unplayable music for string quartet; and the Arditti have always specialised in the unplayable.

They're still bringing Beethoven and Shostakovich to London, enriching the mix a little with the cross-referencing of Alfred Schnittke, but the personnel of the Borodin Quartet have changed again. Patriarch cellist Valentin Berlinsky, there at the start over 60 years ago, passed on his bow to Vladimir Balshin before he died.  Balshin is a worthy successor, especially since Berlinsky's tone had become translucent to the point of dematerialising and his successor's is rich indeed, but is "Borodin Quartet" now more a brand name than a vital entity?

The great and the good came to Imogen Cooper’s 60th birthday concert. In fact, so thick with friends and fellow pianists was the Wigmore Hall, that at the end there seemed to be as many people going backstage to congratulate her as were leaving through the front doors. In that quietly embarrassing, I-hope-no-one-saw way, after some light-hearted Schumann, I thought for a moment she flashed a smile at me and – charmed – smiled back, but it turned out that I was sitting behind Brendel. It was that sort of audience.