heres the intro to the song which is on a ukelele but it sounds alot cooler like this. 
it's just C, Em, Am over b, and then B.it's another way to play it  for tabs it's: 

----0----------0------------0-------------3----------------------------| 
---1--1------0---0--------1---0---------3---3--------------------------| 
--0----0---0-------0----2-------0-----0-------0------------------------| 
-----------------------------------------------------------------------| 
3--------2------------0-------------2----------------------------------| 
-----------------------------------------------------------------------| 
C           Em              Am        B 

YOu just repeat these two cords to complete the second guitar part in the intro also 

have fun