Wise men say, only fools like us debate the truth of Rock & Roll: Elvis is King! Hail to the King, baby.

But wait! Cliff Richard has far more top singles! He's still recording and performing. He got knighted by Her Majesty, which is almost like royalty!

My, what a dilemma we have. if only Rock & Roll weren't so big and complicated. Join us for the battle and find the answer to the question: from the UK to the USA, who really knows how to rock?