Sister Rosetta Tharpe. You've probably never heard of her. She was not only a gospel singer but essentially the founder of rock 'n roll. Johnny Cash worshipped her. Chuck Berry copied her. Stay with the video through the guitar solo.
Just reposting this thread, because the old one broke. I'm told threads here sometimes do that after so many pages. I guess I'll be locking the old one so no one posts there only to not be able to see their posts, then.