I always wonder whether our dead musical heroes would have been nearly as famous had they survived to middle age. Sure, some of them become the Rolling Stones, but would Jimi Hendrix still be setting fire to guitars (probably not - OH&S) and tugging on those leather trousers? Would John Lennon have become as middle-of-the-road as McCartney? Would Kurt Cobain have got a nice haircut and sobered up, driving a minivan when it was his turn to do the school run?