As conundrums go it was pretty hard to beat: a bunch of Italiano-Glaswegians notching up their biggest hit with a rocked-up remake of a song originally made famous by an American funk group with a codpiece-wearing frontman. You couldn’t have made it up. But don’t go running away with the notion that Gun’s unlikely version of Cameo’s 1986 Top 5 smash hit Word Up was a novelty launch pad for their own career. By the time the band recorded it as part of 1994’s appropriately titled album Swagger they already had two other albums (1989...