Just the chord progression in the intro and most of the song
Drop D Tuning
e|-----|---------------------------|
B|-----|---------------------------|
G|-----|o-------------------------o|
D|-----|o--------7-7-7------------o|
A|-12\-|--4--4-4-5-5-5-9--9-9--9-2-|
D|-12\-|--4--4-4-------9--9-9--9-2-|