Yeah, Hard Time Blues is a version of Hard Time Killin' Floor, though has more in common with the sound of Do Boy Diamond, IMO. And Black Mattie has a verse from My Black Mama and follows the melody somewhat, as does Going Away Blues. Williams uses some familiar Mississippi lyrics and I wonder whether some of them were just floating and that the songs were just songs some people learned through them being passed along, rather than specifically covering Son House or Skip James. Williams also did a version of Shaggy Hound Blues, which was done by Shirley Griffith, but as was discussed around here recently, may possibly have roots in the repertoire of Ishmon Bracey. And he does Catfish, which is more of a cover.
