So What's Elvis' Biggest Shame?

Lonnie Donegan, by the sounds of things.

You hear it though.

The Musical Hall tradition;

https://youtube.com/watch?v=w-nq4Xkntus (Does Your Chewing Gum Lose It's Flavour, Lonnie Donegan, Official Audio).

Mixed with the Gospel tradition;

https://youtube.com/watch?v=C_V66kIEhUs (Joshua Fit the Battle of Jericho, Delta Rhythm Boys, Video, jousis).

Along with the Folk tradition;

https://youtube.com/watch?v=DcvWrxrNk4k (Worried Man Blues, Carter Family, a/v, ILOveOldies).

To form that devilish Rock n' Roll.

https://youtube.com/watch?v=mmlgc6znnNA (Run On, Elvis Presley, Official Audio).