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.

In search of relatively rare fabulous beasts like César Franck’s Piano Quintet – given a fantastical performance last night – you often have to take in the ubiquitous Shostakovich specimen, the modest work of a master using simple means to his own creative ends that doesn’t bear too much repeated listening over a short space of time.

After full orchestral performances of Brahms’s Violin Concerto and First Symphony, the Scottish Chamber Orchestra shone a more intimate light on the composer’s oeuvre with a recital of chamber works in Edinburgh’s Queen’s Hall on Sunday.

It’s not often that the most bittersweet moment in a rich concert comes in the encore. Elisabeth Leonskaja had already played the generous extra in question, the Dumka movement of Dvořák’s A major Piano Quintet, with the Staatskapelle Quartet only a fortnight earlier. Here, fine-tuned with the Jerusalems, that moment when the joyfully flowing episode turns dark and the piano seems to call from a dark wood proved sheer magic.

It’s dangerous to claim a sense of absolute rightness about a musical performance; that could mean no more than responding to an interpretation which happens to chime with your own subjective expectations. Yet I’m happy to stick my neck out and say that the partnership of septuagenarian pianist Elisabeth Leonskaja with the young Staatskapelle Quartet of Berlin felt absolutely right in works by Brahms that cry out in every bar for authentic musicianship (★★★★★).

The Castalian String Quartet is half what I remember, but only literally: while viola-player Charlotte Bonneton and cellist  Christopher Graves may have departed, their replacements, Ruth Gibson and Steffan Morris, more than earned their laurels in last night’s stunning programme.