Turning every concert into a party, baroque ensemble L’Arpeggiata are performers in the truest sense. Too often early musicians get away with being shy or downright awkward, visibly uncomfortable when forced to introduce an encore. Not so with these European virtuosi, whose signature improvisations give each member (yes, even the percussionist) the chance to step into a starring role. And don’t get me started on the baroque rap that concluded the group’s most recent London concert…

A question flitted through my mind in advance. Was I down to review La Nuova Musica’s modern premiere of Conti’s baroque opera Issipile, or was it Issipile’s opera Conti?  To many music lovers, even those well grounded in history, both possibilities must be equally plausible.

Of Schubert’s two great cycles, the youthful ardour of Die schöne Müllerin sits best with a tenor while the bleak wretchedness of Winterreise lends itself to the baritone voice. These, of course, are personal prejudices, for both works can be sung in either range (and indeed beyond, as the presence in the Wigmore Hall audience of a leading female exponent of Winterreise, Alice Coote, reminded us), but it’s what experience has taught me.

It's a considerable irony that a musician as dedicated and as serious as pianist/conductor Christian Zacharias should suddenly, at the age of 63, gain bragging rights on Youtube (see next page). There wasn't really that much he could do about it. It happened last October. A mobile phone went off as he was directing a Haydn concerto from the keyboard in Sweden. You can see his silent but intense frustration as he stops playing. “Don't answer,” he says. He waits until the loud noise of the moble phone stops, and gets back to playing.

The great Marilyn Horne used to joke that she was going to release an album entitled “Chestnuts for Chest Nuts”. She never did, but that leaves the door wide open for Sonia Prina whose dark, thrillingly low sound marks her out as the real deal, a genuine contralto. But the excitement of Prina in performance isn’t just about her extraordinary skill at using her unusual range.

There were two strong reasons, I reckoned, for struggling to the Wigmore Hall during the interstitial last week of the year. One was an ascetic wish to be harrowed by a mind and soul of winter, both within and without, in Prokofiev’s towering D minor Violin Sonata, after so much Christmas sweetness and light.

Exactly what constitutes “the End of Time” in Olivier Messiaen’s extraordinary Quartet for piano, violin, cello and clarinet? Not surely “the end of days” but rather the end of measured time; music unfettered, music of the spheres, music without frontiers.

There are probably more fine string quartets in the world than audiences to listen to them, or so a gloomy estimate from a major chamber music festival would have us believe. Fortunately the Wigmore Hall usually guarantees crowds to hear the best, and at the highest level too we’re spoilt for choice. After two outstandingly vibrant recent visitors, the Belcea and Jerusalem Quartets, the equally touted Pavel Haas Quartet merely seemed very good rather than great, though they upped the stakes when mercurial 22-year-old Daniil Trifonov joined them for Shostakovich’s Piano Quintet.

As farewell galas go it was less an obituary, more a celebration of an artist who has earned every whoop of the rock-star welcome she received from an adoring crowd. Dame Felicity Lott – "Flott" to her friends (i.e. pretty well everyone present) – was cheered to the echo by her fans and eulogised at either end of the evening by Wigmore Hall director John Gilhooly.

A previous visit to the Wigmore Hall saw the Jerusalem Quartet make headlines for all the wrong reasons, after political protestors disrupted the live-broadcast concert. Last night however all was mercifully calm and music-focused for the start of the first three-concert sequence in the quartet’s Shostakovich cycle, though audience members did have to brave the rather incongruous bouncers, lined up in their casual-with-just-a-hint-of-don’t-even-think-about-it chic outside the hall doors.