This is the main riff played throughout the song:
e----------------------------------------------------------------
B----------------------------------------------------------------
G--**-9-5-*--6-7-*-------------------------------------
D--**-9-5-*--6-7-*-7-5---------------------------------
A--**-7-7-*--4-5-*-7-5---------------------------------
E------------------5-3-----------------------------------

Betwixt Verses

e----------
B----------
G----------
D-7-5------
A-7-5------
E-5-3------


Verse

e-----------------------
B-----------------------
G-----------------------
D-----------------------
A-----7-5-4-5-5---------
E-0-0-----------5-3-----

The solo is improvised, in the key of E, using the minor penatonic scale.