E|----------------------------------|
B|----------------------------------|
G|----------2----5p2------2-----5p2-|
D|---------------------5------------|
A|-----0----------------------------|
E|--3b------------------------------|

Amos Moses was a Cajun...
A7,B7,D7

Repeat main riff

A7,B7,D7

Repeat main riff

E7,D7,A x2

E,C,D

I think this riff is on bass, but it can be played on guitar like this:
E|-------------------------|
B|-------------------------|
G|--7---5------------------|
D|---------7----5----------|
A|------------------8----5-|
E|-------------------------|

Right after that there is this quiet riff

E|---------------------------------------------------------------------|
B|---------------------------8-------------------------8---------------|
G|-----------5-------------------------------5------------7p6p5--------|
D|--5h6h7--------7------5/7--------0--5h6h7-----7--5-------------7-----|
A|------------------------------0--------------------------------------|
E|------------------------------------------------------------------8-|