Timothy Sheader's production at the Open Air in Regent's Park is exciting, brilliantly sung and choreographed and, best of all, unbounded by walls.  On a fine summer's evening, the cast join us progressing through the audience and immediately I felt we were witnessing a joyous sect of enthusiastic and inspired youth.  They are magnetic so that you want to be part of them.  They make their way down to the stage dominated by a 35 foot cross on the playing area.