You need palm mute the E and A string the whole song. If you are
righthanded mute the strings with your right hand and so on...

This is the song, its pretty easy so, enjoy:

e|------------------------------------------------------------------------|
B|------------------------------------------------------------------------|
G|------------------------------------------------------------------------|
D|------------------------------------------------------------------------|
A|-11-13---14-14-14p13-11-11-11/13---13-11-13-11----13-11-13-11-13-13/14--|
E|--------------------------------14------------14------------------------|

This part can get pretty boring to play so I usually improvise with the
A-Bluesscale:

e|--------------------------5-8--|
B|----------------------5-8------|
G|----------------5-7-8----------|
D|------------5-7----------------|
A|------5-6-7--------------------|
E|--5-8--------------------------|