Backing and filling, huh? You said Elvis had more of an influence than the Beatles and now you are talking about his influence on the market. Look I love Elvis, but IMO the Beatles had a bigger influence on contemporary music than Elvis. You don’t think the Beatles didn’t make rock n roll more desirable? To borrow a phrase c’mon man. As I also pointed out, Elvis was a vocalist period. A great one, but still a vocalist. While I think he played a little piano and guitar, he was not a musician. He also wasn’t a song writer.