Bob Marley


                     BOB MARLEY and THE WAILERS

                           NATURAL MYSTIC
                     
                           album: EXODUS

     RIFF 1
G ||-------------|| 
D ||-------------|| 
A ||-------------|| 
E ||-O-3--5-5----|| 


     RIFF2 
G ||-------------|| 
D ||-------------|| 
A ||-O-3--5-5----|| 
E ||-------------||


If you listen to the song it's fairly clear
when to alternate between the two riffs.