Revolution in the head

January 1905: Russia teeters on the brink of revolution, and as crowds fill St Petersburg’s Palace Square, great and terrible events are about to unfold. With its revolutionary songs and clanging alarm bells, Shostakovich’s massive 11th Symphony has the immediacy of a great film score, but charged with massive – and tragic – symphonic power. It’s hard to match that, but tonight Peter Donohoe and Vladimir Jurowski give a rare London performance of John Foulds’s breathtaking Dynamic Triptych. A dizzying fusion of Indian philosophy and Jazz Age verve, huge in scale and volcanic in energy, it’s arguably Britain’s greatest 20th-century piano concerto you’ve never heard.