Since the dawn of rock n roll, the only performers on similar footing are the Beatles, who like Elvis, not only released hit record after hit record, literally caused crowds to swoon and set concert records everywhere they went, but also made movies, lots of movies.

FORBES: Graceland at 30 - Better Than Ever

He is able now to record them on tape at the time - but said that when he was with the Beatles, this was not possible, and this was how he and John Lennon would know if they had a good song.

BBC: NEWS | Entertainment | Sir Paul reveals songwriting secrets