Sadler's Wells, LondonThis parody of courting rituals brings back its inaugural dancers 48 years on " ghosting their onstage choreography with footage of their younger selves, for a moving look at the passing of time 'My name is Arthur, Arthur Rosenfeld. I'm nearly 74," says the self-proclaimed "sprightly old geezer" on stage. "My name is Meryl Tankard. I'm 70," says the woman next to him. Josephine, 76; Ed, 80; John…