One by one, cathedrals have succumbed to the inevitable. In blazes of publicity, with front-page photographs of girls in cassocks in the cloisters, most deans and chapters have signalled their drive for equality of opportunity by inaugurating a girls’ choir to run alongside the boys’ one. So now, at the vast majority of our cathedrals, instead of boys singing up to eight services per week, the two top lines take turns, in varying ratios, with girls aged from eight to 18.