"If you tried to give rock ‘n’ roll another name, you might call it Chuck Berry". That’s John Lennon speaking, and he knows what he’s talking about: the Beatles learned their craft from covered material by the St Louis, Missouri genius, and so did Keith Richards and pretty much everyone else. He wrote all the big songs, and decided what rock ‘n’ roll guitar should sound like. Just listen to the intro riff to Johnny B. Goode: in 55 years, no one’s come up with anything better. Even though we now know he stole it from Marty McFly.