When 16-year-old Larry Mullen saw the advert for the “Limerick Pop Group ‘78” competition, he immediately told his friends Dave Evans, Adam Clayton and Paul Hewson. Limerick was a two-hour train journey from their hometown of Dublin, but he reckoned it was worth it – especially as the prize was £500 and a recording session with CBS. Their band, The Hype, had begun scoring regular gigs, and this could be the break they were desperate for. The Hype had only recently slimmed down from a five-piece to a four-piece (Dave Evans’ older brother Dik had recently left to form his own band, the Virgin Pr…