There is a moment, where those of us waiting backstage in the community chorus, see three actors shoot off stage right, shedding jackets, scarves, jumpers and racing round to appear on stage again moments later.  The wardrobe staff grab what they can,  hand out the next layer of clothing and gather up the heaps from the floor. The stage manager listens to her earpiece for the next cue, hand on door, effortlessly ushering someone through. The music rises, the light changes; we can’t…