By the middle of the 1960s his face was one of the most recognisable on the planet. Only Jesus, Mickey Mouse and Muhammad Ali shared the same level of fame as The Beatles, and not all of them were as universally adored as Paul McCartney.
There had never been a group of musicians who had sold as many records, awoken an entire generation or caused such hysteria.
In one week in 1964 they held all five spots at the top of the US Billboard 100, an achievement no performers have got close to since.
