___________________ 6 JULY, 1972 David Bowie appears on Top of the Pops for a third time. His quiff is big, bold, and the colour of fire. His make-up is lavish. His jumpsuit is a wild burst of colourful patterns, like a fluorescent fish skin. He carries a brand-new blue acoustic guitar. There's excitement, mixed with incredulity. And then he begins to play. It's a moment that will change the world of music forever. This is Ziggy Stardust, what would...