That Howlin Wolf tune is quality man. Serious voice and presence...

Is it evil and the dangers of the devil that ties them and the guys are singing the blues to warn people of the perils. These lyrics from each song put me on that trajectory.. Maybe I'm way off..

"You gotta keep the devil
Way down in the hole"

"There's a hellhound on my trail, hellhound on my trail
Hellhound on my trail"

"That's evil, evil's goin' on
And I'm just warnin' you brother
You better watch your happy home"