Rose theatre, LondonA striking score and expressive singing carry Christopher Haydon's production of the wartime classic First there's the prologue. Then the play-within-a-play. Finally, a second half with a knotty back-history of its own. And it's all shot through with song. That's an awful lot of storytelling to get through in Brecht's parable about motherhood and justice. Director Christopher Haydon has an excelle…
