Head On

[Intro]
   Am                     D                      G                      C
E|----------------------|----------------------|----------------------|-----------------------
B|-1-----------0--------|-------------0--------|-------------0--------|-------------1--0------
G|-----2------------2---|---------2------------|-0--------------------|-0------------------2--
D|---------2------------|-0----4---------------|-----0----------------|---------2-------------
A|-0--------------------|----------------------|---------2------------|-3---------------------
E|----------------------|----------------------|-3--------------------|-----------------------
E|----| 
B|----| 
G|-0--| 
D|----| 
A|----| 
E|----| 

   Am                     D                         E
E|----------------------|-------------------------|-------------------------|-----------------
B|-1-----------0--------|-------------------------|-------------------------|-------------0---
G|-----2------------2---|---------2---2-----------|-------------------------|-1---------------
D|---------2------------|-0----4------------------|-4---2-------4---2-------|-----2-----------
A|-0--------------------|-------------------------|---------2-----------2---|---------2-------
E|----------------------|-------------------------|-0-----------------------|-----------------

Verses and chorus have the same chords scheme:
Am      D       G       C
Am      D       E

Then at some point it modulates to:
Bm      E       A       D
Bm      E       F#