There’s a moment in the finale of Beethoven’s Appassionata sonata when the frenzied piano writing turns unexpectedly jolly. The late Antony Hopkins described it as a bit of an anticlimax, ‘a little too near to the traditional Gypsy Dance that appears so often in the less probable 19th-century opera’.

I’m not sure whether I agree — but one thing I can tell you is that this is the perfect moment to tap the Uber icon on your phone if you want to be whisked away during the first burst of applause, before the pianist has had the chance to play an...