At John Schlesinger's funeral at a synagogue in St John's Wood some years ago the person I stood next to said to me encouragingly, 'Come on, Stephen - you're not singing. Have a go!' 'Believe me, Paul, you don't want me to,' I said. Besides, I was having a much better time listening to him. 'No. Go on!' So I joined in the chorus. 'You're right,' Paul McCartney conceded. 'You can't sing.