"One afternoon I was in the organ-loft, and I noticed he was indeed very nervous, When I asked him the reason, he told me the anthem was 'Worthy is the Lamb' and the 'Amen' chorus from the ' Messiah' and, he added, 'I can never play this without trembling. If you see me going to break down, hit me hard between the shoulders.' But though I could see how the music affected him, all went well."