-Standard tuning.

The whole song goes like this :

Gm -> D# -> D -> Gm

In the begging of the song:

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