This is a really great song so I just had to try and tab it

Normal Tuning
Verse
g|-0-0-0--0-0--0---------0-0-0--0-0--0------------------|
d|-------------------0h1-------------------oh1----------|
a|---------------0h1-------------------0h1--------------|
e|------------------------------------------------------|


Prechorus
|------------------------------------------------------|
|-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3----------------------|
|------------------------------------------------------|
|------------------------------------------------------|
then go back and forth between the two above bars until the chorus:

Chorus and outro ("I shall be free")

|-0-0-0-00-----------------0---0-----------------------|
|----------0-0-0-00--3-3-3---3-------------------------|
|--------------------------------3-3-3-3---------------|
|------------------------------------------------------|

end
g-O*--------0--0--0|