Here are the basic chords to fever to the form, these are not exactly how Nick plays the 
song, im still working on a full Tab, but you can use these chords to play along or for 
a simple cover, Enjoy!

Standard tuning, capo 3 ( in the actual he uses 2 capos - but one is fine to strum along to)
Chords relative to capo

Three main chords or repeated through out F, Am, G
Listen to the song for timings and hammer each note in brackets twice per chord.

F -0-            Am -0-              G -3-|
  -1-               -1-                -3-|
 -(2)-             -(2)-               -0-|
  -3-               -2-                -0-|
  -3-               -0-                -2-|
  -x-               -X-                -3-|

Intro: F,F,Am,G X2

F                 F
So Whether music or madness
                      Am
Live by one of the two
                 G
By one of the two
F                           F
Go on, fill your heart up with gladness
                     Am
Not a moment too soon
                     G
Not a moment too soon

F                  F
Should we ration the reasons
                          Am
To the charts that ignore
                            G
Of this I've never been sure

F                 F
So i will follow the feeling
                          Am
And sing fever to the form
                         G
Oh my fever to the form

(interlude depends on version - repeat chord progression as required)
Fever to the form
Fever to the form
F                               F
Cos' the very thing you're afraid, afraid of
                              Am
It keeps you clean but unclear
                    G
Clean but unclear

F                              F
Is the dirt that you're made, you're made of
                         Am
And thats nothing to fear
                         G
No, its nothing my dear

F                    F
How did i know what you're thinking
                Am                  G
Maybe i thought it before

               F                         F
Maybe that's why i'm at your window
            Am
Hear me at your door
                     G
Singing give me some more

F                 F
Oh fever to the form
                  Am
Won't you hear me at your door
                         G
Singing give me some more
F                       F
Cos' you were never empty
                           Am
And we've been here before
                               G
Yes, we've been here before
F                       F
But now theres always plenty
                    Am
Yet still we ask for more
                         G
Singing fever to the form

(repeat chord progression to fade)