I've known a guy named Jason D. Williams since he was a kid. His mom worked in the bank in El Dorado, AR. where I lived.
He later did the sound track for the movie about Jerry Lee.
https://www.youtube.com/watch?v=T8E-Fsq6CTk
There's another guy here, Brandy Roberts, who is just about as good, but he has found out that there is already a Jerry Lee Lewis. He works in Branson a lot, but no big-time stuff.