By Paddy and Si (*)
This is the intro but i also occurs throughout the song lot.
For rythym, listen to the song.

Standard Tuning
Intro

G------------------------------------------------
D------------------------------------------------
A--2--5--7--556/9-9-9-9--------------------------X3
E------------------------------------------------

Then on the 4th time it goes

G------------------------------------------------
D------------------------------------------------
A--2--5--7--99-----------------------------------X1
E------------------------------------------------

Then it goes back to normal into the verse. The verses are the same as the intro. Im yet to figure out the chrorus