Never go back, they say (whoever 'they' are), but are they right?
Probably, in the case of a lit firework. Then again, what about Take That, who have reformed after a break of several years and are once again bringing their particular brand of music to millions and millions of people?
Actually, they're still right.
And the same goes for two other groups who have recently reformed: the ironically-named Verve and the Spice Girls, although the latter at …