Years ago, as a penniless young musician, I sometimes played the organ at weddings and learned a bitter lesson: the congregation hadn’t come for the music. I was used to concert audiences who listened attentively and rewarded pleasure received with appreciation given, and it came as a shock to discover that wedding congregations chattered or nipped out for a ciggie during our lovingly rehearsed anthems, failed to join in the hymns and allowed their infants to howl – though once I had become a parent I grew more forgiving of this.