Combine four super-talents, masters of their instrument, and you might well expect a battle of egos or a clash of modi operandi.  Not least, as in the case of Les Égarés, a quartet made up from two seasoned duos – the virtuoso jazzers Vincent Peirani (accordeon) and  Émile Parisien (soprano sax) on the one hand, and the entrancing creative partnership of Ballaké Sissoko (kora) and Vincent Ségal (cello) on the other.  And yet…

What a month, and what a day, for Michael Barenboim to bring the West-Eastern Divan Ensemble to London.

In a fusion of musical traditions both eastern and western, old and new, Scottish Ensemble were joined by virtuoso sitarist and composer Jasdeep Singh Degun for an evocative performance of Degun’s own work plus reimagined music by Terry Riley and Hildegard von Bingen at Edinburgh’s Queen’s Hall.

To coincide with the National Library of Scotland’s first bi-lingual exhibition Sguel/Story, an exhibition in English and Scottish Gaelic which celebrates stories and storytelling, the library presented a performance of newly reinterpreted Gaelic ballads with string quartet arrangements from composer Ned Bigham.

Few pianists manage stylistic perfection in both Mozart and Ligeti, but to Jeremy Denk it seems to come naturally. We should have heard the riveting contrasts in quick first-half succession, but European air traffic control had wasted much of the Danish String Quartet’s day and they hadn't arrived by the start of the concert. So perfect programming went out the window and Ligeti had to stand alone before the interval.

Do we really need instrumental Shostakovich with lighting, movement, costumes and video projection? I might have said no before having seen what the Norwegian Chamber Orchestra could do with former leader Terje Tønnesen, performing the Chamber Symphony by heart in dramatic style. It seemed likely that memorizing even more music under new Artistic Director Pekka Kuusisto, and performing it in an insanely demanding dramatic framework, with no word spoken, could work.

Conversation just before this concert started concerned Verdi’s Il trovatore and the truism that it needs “the four greatest voices in the world”. Whether or not the quartets we heard by Mozart, Prokofiev and Brahms demand the same in string terms, they all hit breathtaking levels of humanity, thanks to the singing interaction of the Jerusalems, the peerless chamber music equivalent of the Berlin Philharmonic.

Any chamber music festival that kicks off with Czech genius Martinů's Parisian jeu d'esprit ballet-sextet La revue de cuisine and ends its first concert with Saint-Saëns's glory of a Septet for trumpet, piano and strings is likely to be a winner.

Rigorous, hauntingly original and unlike each other, Britten’s three numbered quartets could share a programme and still stake equal claims on our attention. That might be tough on the players, but the Castalians haven’t been easy on themselves in the three concerts they’ve given to share out the honours between Britten and other composers.