'Electrifying!' says a friend, anticipating the worship. As people return to the pews, a music group leads into the first song. 80-year-old women are dancing with hands in the air. The song finishes. You pray together out loud, praising God, praying for others, praying for yourself. Another song. Harmony. Rap rhythms. No problem with young boys' behaviour - they're on the bongos.