Drop D Tuning (D-A-D-G-B-e)
Main Riff:
_______________________________________
e -----------------------------|
B -----------------------------|
G -----------------------------|
D -----------------------------|
A -5-5p3-----------------3-0---|
D -------7-7s8-8-7-3--3-5------|
[ Tab from: https://www.guitartabs.cc/tabs/w/wolfgang_gartner/illmerica_tab.html ]
Second Riff (It changes a little bit here and there but this is the gist of it):
_______________________________________
e -----------------------------|
B -----------------------------|
G -----------------------------|
D -----------------------------|
A -5-5-3h5-3h5-----------------|
D -------------7-3-0-----------|
Hope this helped! Enjoy! :D
Link to Wolfgang Gartner's Page:http://www.myspace.com/djwolfganggartner