Funny thing about blues music is that lots and lots of lyrics were passed around from musican to musican and Hound Dog ain't do different. Sure Mama Thornton recorded it first but whe she performed it live she'd mix and match lyrics, just as blues folks did back then and still do today. There was a period of time when everyone was singing "walkin' Blues" yet it somehow get accredited to Robert Johnson. Shoot, there's pieces of it in Son House's old stuff and pieces of Son House's in Charlie Patton's ol' stuff and pieces of Chalie Pattons in....

And the beat goes on...

Blues is kinda hard to pin down when it come to authorship but we do know that Mama Thorton recorded Hound Dog before Elvism though Elvis being from a hotbed of blues players mighta been playin' it fir years... One has to know that he played a lot of blues before he became known....

Bobert