Brahms didn’t always have a beard. The picture in the London Symphony Orchestra’s programme book showed him clean-shaven, and rightly. The beard didn’t reach its final imposing form until 1878, around the time Brahms started sketching his Second Piano Concerto. (‘Prepare your wife for the grisly spectacle,’ he wrote to his friend Bernhard Scholz, ‘for something so long suppressed cannot be beautiful.’)