It’s quite a weighty concept, and one which could easily have buckled had both the music and its execution not been of the highest quality. Aurora Orchestra’s "Music of the Spheres" was a concert inspired by the Greek philosopher Pythagoras’s theory that each of the planets in our solar system must emit a particular sound through its orbit. The story goes that while passing a blacksmith at work, Pythagoras noticed that the sound produced by two anvils of differing weights was the same, though an octave apart.

The BBC Philharmonic have given memorable accounts of Shostakovich’s Symphony No 4 in Manchester before – notably conducted by Günther Herbig in 2010 and by John Storgårds in 2014 – but surely none as harrowingly grim as under Mark Wigglesworth this time.

Last night saw the official unveiling of 33-year-old Finn Santtu-Matias Rouvali as Principal Conductor Designate of the Philharmonia Orchestra, an appointment that has been widely welcomed, not least on theartsdesk. And while I enjoyed Rouvali’s work I had some reservations, and I would like to see him again before coming to a firm judgment.

Playing with such energy, such synergy and such general camaraderie at the start of a tour must surely pave the way for even greater things to come. The Scottish Chamber Orchestra with Nicola Benedetti kicked off their European tour at Birmingham Town Hall, ahead of performances in Denmark, Switzerland and Germany.

As one half of British politics convulsed into a deeper spasm of suicidal fury, it came almost as a relief to hear a great Anglo-Italian conductor lead an impassioned Roman orchestra in a massive, terrifying symphony once described by a (German) maestro as the first example of musical nihilism. Ah, but that’s the paradox of Mahler’s Sixth. His so-called “Tragic” symphony – though he disavowed that label for the epic, 85-minute work he premiered in 1906 – might amount to an overpowering expression of grief, rage, and despair at the cruelty of fate.

Expectations ran high for this final concert in Benjamin Grosvenor’s Barbican/Milton Court series, especially after the magic he and the Doric Quartet wrought in their February performance.

By some strange alignment of the stars, Peter Sellars’s staged version of Orlando di Lasso’s Lagrime di San Pietro (Tears of St Peter) arrived at the Barbican Hall just as – next door in the theatre – Pam Tanowitz’s directed her dance interpretation of TS Eliot’s Four Quartets.

You seldom hear a Champions League-level roar of approval at the Wigmore Hall. Last night, though, Igor Levit drew a throaty collective bark of appreciation from the audience after (for once) an awed hush had followed the final dying cadences of the aria’s return in Bach’s Goldberg Variations. Had he earned it? Absolutely. This recital was first of three devoted to the idea of Variations. Friday will see Levit play Beethoven’s Diabelli set, and Frederic Rzewski’s mighty deconstruction of the revolutionary anthem “The People United Will Never Be Defeated”.

It’s 15 years since Benjamin Grosvenor first strolled onto our TV screens as a prodigiously gifted child in the BBC Young Musician Competition. Today he is a self-possessed young man of 26, in his element on the concert platform, yet without a hint of affectation; and unlike certain musicians who play the same type of music all the time, he ventures constantly into new and sometimes surprising musical territory.