"I know him so well" - Elaine Paige and Barbara Dickson
The two stand at corners of a square, facing at right angles to each other, and not acknowledging the other's presence a mere hand away.
It's superb singing, and superb stagecraft - one would expect nothing less from The Wronged Wife and The Mistress.
Coming up on Sunday night: it's Elaine Paige night on BBC4.
