the song is played with a capo on 2 fret. It's played with a pick and they play
something like this(not 100% correct):
--------3---------------3------------3---------3---|
----------3---3-----------3---3--1---1----------1--|
------------0--------0------0----2-----------0-----|
--0----------------2-------------2---------2-------|
--2--------------3---------------0-0---0-3---------|
--3-3----------------------------------------------|
--------3---------------3------------3--3-----3-2------|
----------3---3-----------3---3--1---1--1-----3-3-3--3-|
------------0--------0------0----2-----2----2-------2--|
--0----------------2-------------2--------0------------|
--2--------------3---------------0-0-------------------|
--3-3--------------------------------------------------|