Hope I get old before I die: why rock stars never retire

When Paul McCartney closed Live Aid in July 1985 we thought he was rock's Grand Old Man. He was forty-three years old.

As the forty years since have shown he - and many others of his generation - were just getting started.

This was the time when live performance took over from records. The big names of the 60s and 70s exploited the age of spectacle that Live Aid had ushered in to