The song starts with a very low bass line even though its probably not played with a bass.

Intro/Main Riff - Play X2 before verse begins
 E |---------------------------------------------|
 B |---------------------------------------------|
 G |---2-----------5-----------2-----------5-----|
 D |-----2-----------5-----------2-----------5---|
 A |-0-----0-----3-----3-----0-----0-----3-----3-|
 E |---------------------------------------------|

 E |---------------------------------------------|
 B |---------------------------------------------|
 G |---2-----------5-----------4-----------7-----|
 D |-----2-----------5-----------4-----------7---|
 A |-0-----0-----3-----3-----2-----2-----5-----5-|
 E |---------------------------------------------|

Pre-Chorus - right before the chorus play this rather than the one above
 E |---------------------------------------------|
 B |---------------------------------------------|
 G |---2-----------5-----------4-----------3-----|
 D |-----2-----------5-----------4-----------3---|
 A |-0-----0-----3-----3-----2-----2-----1-----1-|
 E |---------------------------------------------|

Chorus
 E |---------------------------------------------|
 B |---------------------------------------------|
 G |--2-2--222---5-5--555---2-2--222---5-5--555--|
 D |--2-2--222---3-3--333---2-2--222---5-5--555--|
 A |--0-0--000---3-3--333---0-0--000---3-3--333--|
 E |---------------------------------------------|

 E |---------------------------------------------|
 B |---------------------------------------------|
 G |--2-2--222---5-5--555---4-4--444---3-3--333--|
 D |--2-2--222---3-3--333---4-4--444---3-3--333--|
 A |--0-0--000---3-3--333---2-2--222---1-1--111--|
 E |---------------------------------------------|

After Chorus
 E |-----------------------------------------------|
 B |-----------------------------------------------|
 G |--2-2-2-2-----5-5-5-5-----2-2-2-2-----5-5-5-5--|
 D |--2-2-2-2-----5-5-5-5-----2-2-2-2-----5-5-5-5--|
 A |--0-0-0-0-----3-3-3-3-----0-0-0-0-----3-3-3-3--|
 E |-----------------------------------------------|

 E |-----------------------------------------------|
 B |-----------------------------------------------|
 G |--2-2-2-2-----5-5-5-5-----4-4-4-4-----3-3-3-3--|
 D |--2-2-2-2-----5-5-5-5-----4-4-4-4-----3-3-3-3--|
 A |--0-0-0-0-----3-3-3-3-----2-2-2-2-----1-1-1-1--|
 E |-----------------------------------------------|

it then goes back into the kind of bass line and the main riff is played again and then its the chorus.

after the second chorus this riff is played one extra time: (listen to the song)

 E |-----------------------------------------------|
 B |-----------------------------------------------|
 G |--2-2-2-2-----5-5-5-5-----2-2-2-2-----5-5-5-5--|
 D |--2-2-2-2-----5-5-5-5-----2-2-2-2-----5-5-5-5--|
 A |--0-0-0-0-----3-3-3-3-----0-0-0-0-----3-3-3-3--|
 E |-----------------------------------------------|

after that the bass line is played at the same time as the riff above until the end of the song.

that's pretty much all of it.

enjoy.

    `&&&'
    `&&&'
     |_|     
     |_|
     |_|    
     |_|   
  /(_|_|_)  THIS
    |_|  /  HAS
    |_| /  BEEN
   / |_|   THE
  /  |_|    WORK 
 (   """   )  OF
  \_______/  ROSS NOBLE