"I've been coming to look at this for 30 years," says an American in London's National Gallery, "and I don't know why it moves me so much." Nor do the critics, the green clown in the Grande Place Brussels, Father Dierick with his painstaking camera and the Scouse children ambushed in Bruges. And nor do we. For the last 100 years of its 500-year history, Jan Van Eyck 's secular masterpiece, a double portrait of a richly dressed couple, sometimes called The Arnolfini Marriage, has pleased, puzzled and polarised critical and public opinion. Radio 3 goes through the mirror into the heart of a masterpiece.
With Jack Klaff as Jan Van Eyck. Producer Piers Piowright