Hey this is a great intro riff and this is 100 Percent right. they are in standard
tuning.  the timing of this riff is kinda hard to get tho
but its right so enjoy.
Tabbed by:Jimmy Pagey
Email:as if

Tuning: Standard e a d g b e

E|----------------------------------------------------------------------------------|
B|----------------------------------------------------------------------------------|
G|----------------------------------------------------------------------------------|
D|--------------------5----------------------------------2--------------------------|
A|------5----7------------------7-------5-----5-------------------------------------|
E|--------------0----------0--------0-------------3p0-------------------------------|