I believe the first bits are piano, but it would make for a boring tab if I hadn't  
them, it would sound more accurate on two guitars unless you could actually keep the rhythm  
pick the notes with your other fingers. 
 
Intro and verse                          Variation 
{--------------------------------------|----------------} 
{-----------------------8---8p0-7------|---5---5--------} 
{---------------------7---7------------|-7---7---7-6----} 
{--------------------------------------|----------------} 
{---5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5--|----------------} 
{--------------------------------------|----------------} 
                                                   Variation for Verse 2 
{-------------------------------------------------|-------------------} 
{-------------------------------------------------|-------------------} 
{-44444444-7----------7-----------77-7666-55-5444-|--------------44444} 
{-44444444-7-77777777-7-55555555--77-7777-55-5555-|-55555-77777-44444} 
{-22222222-5-77777777-5-55555555--55-5555-33-3333-|-55555-77777-22222} 
{------------55555555---33333333------------------|-33333-55555------}