The song was recorded in F.
The beginning starts out with F7 chords.
Then it goes into this riff during the verse:

e------------------------------|
b------------------------------|
g------------------------------|
d-------------------0--3-------|
a----------0--1--1-------------|
e-1--1--4----------------------|

Chorus:

F / / / / G# / / / / Bb / / / / C# / / / / X2

Solo uses a COMBINATION of these notes:

e---------------------------------------------|
b-----------------(b9)-----11---12--------------|
g--------------------/10----------------------|
d---------------------------------------------|
a---------------------------------------------|
e---------------------------------------------|