Once upon a time there was the arche-typal Manchester band — half of which came from Macclesfield, in leafy Cheshire, and a quarter of which grew up in Salford, a city in its own right, full of fans of a famous football club equally confused about its true home. This combustible combo was Joy Division — or it was after they dropped Warsaw, because of its Nazi connotations, adopting instead a moniker given to the brothels in Nazi concentration camps.