Downtune 1/2 step

Song starts with a little picking and a bend on the second and third
string from the top at the second and fourth fret respectively (second
string from top-second fret, third string from top fourth-fret)
Using your pinky seems to help for the bend

Then it goes:

G - E , then back to the bend part

repeat a few times

Chorus:

D - C - G - E

the switch from G to E is kinda quick...