I am a big KingFish fan.
This is a cool tune.
Play it in E, use the 9th fret barre postion (the A shape ala CAGED).
Hit the open 6th string E, (the first note of the song in an open E, followed by the chord strum).
The intro, goes from that E, to the D postion 2 frets back, (play the D-chord using the G-shape).
The trick on both of these chords is, to slide from the A-shape to the G-shape on the 5th string.
Like after you hit the first E-chord, slide from the 7th to 9th fret on string five with your ring finger, and barre the D-chord with your index.
The when you play the E-chord again, slide from fret 9 to 11 on the 5th string with your ring findger, and barre the E-chord with your index finger.
The verse is: E/// D/ A/ E/// E///
(Each note and the slash following are 1-beat)
The OOhhh, OOhhh, Yeah.... part is:
A/// G/// E/// E///
A/// G/// C/// D/// E///
I'll try to post tab or a vid when time allows.