Howlin Wolf - Smokestack Lightnin Ukulele

Riff:

A-|----3-6-----------------|
E-|----3-5------6----------|
C-|--0------5/7---7-5-3p0--|
G-|------------------------|

This riff repeats through the entire song.

If you listen to the song, occasionally one note changes.
Possible changes include:

A-|----3-6-----------------|
E-|----3-5------6----------|
C-|--0------0h7---7-5-3p0--|
G-|------------------------|

A-|----3-6-----------------|
E-|----3-3------6----------|
C-|--0------5/7---7-5-3p0--|
G-|------------------------|

A-|----3-6-----------------|
E-|----2-5------6----------|
C-|--0------5/7---7-5-3p0--|
G-|------------------------|

A-|----3-6-----------------|
E-|----3-6------6----------|
C-|--0------5/7---7-5-3p0--|
G-|------------------------|