There's an interesting thread running through with Howlin' Wolf. A Mississippi Delta blues face moving up to chicago and going electric. Good friends with Son House who is a bit of a progenitor/pioneer of blues and Mississippi Delta blues. I suppose that passionate singing and heavy riff based guitar sound.
It's rumoured Robert Johnson tried Chicago out with a band, though I'm not sure there's much in it.
This is a genuinely brilliant bit of footage of Howlin' Wolf, with initial camera focus on Son House. Looking dapper for sure.
Howlin' Wolf - Dust My Broom (Newport Blues Festival 1966)
Don't really know what I'm doing here though.