I will teach this in my Ragtime and Blues Lesson Load https://www.daddystovepipe.com/ragtime-and-blues.php
Muddy Waters composition played in the design of Dave “Snaker” Ray.
Requirement tuning but tuned down a complete step; played out of A position.
Dave Ray’s best work with Tony Glover on hca:
https://www.discogs.com/Ray-Glover-Picture-Has-Faded/release/5181798
and
https://www.discogs.com/Ray-Glover-Ashes-In-My-Whiskey/release/3601808
and solo
https://www.discogs.com/Dave-Ray-Snake-Eyes/release/10082742