Elvis, not Hank Williams. One song, heard by a limited audience dousn't do it. Elvis changed the world.

Chuck Berry? Hardly, though we was awfully good. It's "Johnny B. Goode", by the way.

Other seminal influences, but not uniquely, could include Scott Joplin, Enrico Caruso, Bessie Smith, Al Jolsen, Pete Seeger, Johnny Cash, Beatles, Clancy Brothers.

The list could go on, but the longer it gets, the less significance it has.