Im pretty sure this is right and this is a sweet song!!!
The prelude:
E -0-----------------------------
B ---0-2-2-0-2-2-0-2-2-0-2-0---2-
G ---------------------------2---

E ---------------------------------
B -0-0-0---0-0-0---0-0-0-----2-3-2-
G -------2-------2-------2-4-------

E -----------------------------
B -0-2-2-0-2-2-0-2-2-0-2-0---2-
G -------------------------2---

E -----------------------------------
B -0-0-0---0-0-0---0-0-0-----2-5-3---
G -------2-------2-------2-4-------2-


b) Here starts the main theme:

E ---------------0-5-5-3-5---------2-------------------------
B ---------2---2-----------5-2---3---3-2-5-2-----5-7/5/3/2---
G -0-2-2-4---2-----------------2-------------2-4-----------4-

E -------------0-5-5-3-5---------2-----------------
B -------2---2-----------5-2---3---3-2-5-2---------
G -2-2-4---2-----------------2-------------2-4-2-4-

E -----0-5-5-3-5-------5-5-3-5-----0-5-5-3-2--5-3-2--5-3-2-0---------
B ---2-----------5-2-----------5-2---------------------------3-2-----
G -2-----------------2-------------------------------------------4-2-


During the song (with guitars backing)
---------------

a) The melody (The main theme):
E -------------0-5-5-3-5-------
B -------2---2-----------5-2---
G -2-2-4---2-----------------2-

E -------------0-5-5-3-5-------
B -------2---2-----------5-2---
G -2-2-4---2-----------------2-