Prom 23: Busoni's Piano Concerto at the Royal Albert Hall review – Benjamin Grosvenor's playing rippled and thundered

Endurance piano-playing isn’t yet an Olympic sport but if BMX racing and skateboarding can make it, then perhaps it should be.

If it comes to pass, then Ferruccio Busoni’s 1904 Piano Concerto could be the test-piece. It’s not only fiendishly difficult to play, it’s also very long – just over 70 minutes, compared to, say, Beethoven’s Emperor Concerto, puny in comparison at a mere 40 minutes.