Jerusalem! This fact-studded story of 20th century British music told us that the nation's unofficial national anthem, Hubert Parry’s setting of William Blake’s poem, originated in 1916 as a commission from the “Fight for Right” movement.

Even in a large hall, very good things can come in small packages. In advance, partisans of the Wigmore Hall or some other dedicated chamber space might have feared that the Barbican’s main auditorium would turn out to be too chilly a barn for the intimate music-making promised by this supergroup. All-star trios or quartets, made up of soloists more accustomed to the undivided limelight, can frequently add up to less than the sum of their parts.

Missa in Angustiis. Mass in troubled times. There was a logic in programming Haydn’s D minor Mass on the Armistice Centenary day. The final words of the mass, dona nobis pacem, would be the right ones to end this day of reflection.

How many times have you heard live in concert a concerto for string quartet and instrumental ensemble? In my case, three, all of the occasions performances of John Adams's Beethoven-based giant scherzo Absolute Jest.

National feeling – in music, as anywhere else – depends on choice, not blood. This BBC Symphony Orchestra concert at the Barbican to mark the centenary of Poland’s rebirth as a nation never felt remotely like a feast of aural jingoism.

The Italian pianist Federico Colli, 30, best known so far as winner of the 2012 Leeds International Piano Competition, last night arrived for his Wigmore Hall debut sporting an emerald-green cravat, but the sonic colours he magicked out of the piano quickly put its gleam in the shade. He is an artist developing at an impressive rate, and one of whom I think we’ll be hearing a great deal more in years ahead.

The latest instalment of the Americana ’18 series at St John’s Smith Square last Friday saw the Dmitri Ensemble and conductor Graham Ross present a survey of American minimalist music for string ensemble. In a brilliantly conceived programme, the ensemble found fresh energy and propulsion in these classic works, but also a subtlety and humanity in a style that can be mechanistic.

Sir Mark Elder’s first concert in the Hallé Thursday series for 2018-19 was on clearly mapped Hallé territory – Richard Strauss and Elgar. They have a reputation, and a tradition, of playing these composers’ music very well. They’ve already recorded Elgar's Second Symphony and, judging by the microphones around the platform, they’re doing the same right now with Strauss’s Don Quixote.

Presenting the last Mozart symphonies as a three-act opera for orchestra, as Richard Tognetti and his febrile fellow Australians did on Monday, was always going to be a supreme challenge. It worked, as Boyd Tonkin reported here. Since then, the Barbican's grandiosely-named "International Associate Ensemble" has opened up the repertoire, synchronising with film (on Tuesday) and ending its mini-residency with the kind of vibrant rattlebag for which it's rightly celebrated.

Here it comes - get a grip. The tears have started flowing in the trio "Quid sum miser" and 12 minutes later, as the tenor embarks on his "Ingemisco" solo, you have to stop the shakes turning into noisy sobbing. The composer then lets you off the hook for a bit, but only transcendent beauty in singing and playing can achieve quite this effect in Verdi's Requiem.