Em           C                Em   D    Em
I can no longer hear, aw-aw        CM  CM 
Em         C             Em         D   Em

The sound of a million hearts
Em    C    D              Em
Beating together as one  CM  CM 
Em         C         Em   D  Em

And when the night is gone, aw-aw  CM  CM 
Em            C              Em    D    Em
And when the dawn has come, aw-aw  CM  CM 
Em            C               Em   D    Em

I will take the daylight on
Em  C   D              Em
My cheeks will dry off in the sun  CM ..
Em            C               Em     D

Part 2:
Part 2 introduction, guitar part (same as the ba-ba part):
       Em           D
E|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|-----------0--------2---2--------------------------------------------------|
D|-----2-2-2---4-2--0---0----------------------------------------------------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|

Part 2 introduction, bass part, tuned to Drop D tuning:

       Em                D
E|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|-------------0-2-0--------------0------------------------------------------|
D|-----2-2---5------5-2---0-0-4-5---5-4-0------------------------------------|

There is probably a way to play it in Standard tuning.
Beats me, though. Intro ends acapella.

..ba-ba-ba-BA, ba-da dum Dum dum Dum
Em                    D
..ba-ba-ba-BA, ba-da dum Dum dum Dum
Em                     D

Ba ba ba ba, ba-da ba ba ba ba, ba-da ba ba ba ba, ba-da bum
Em                  G                 D                   A

(Although really, you should not be playing instruments at all by this part and it might 
weird if you do.
Play at your own risk!
The song you once knew might be drastically different.
Try just singing the bass notes, the way the band does. Play with it)

Though my heart once was broke, it's been mended
            Em           Em/B              C
And the sting of the fracture has ended
            Em        Em/B         C
But still the sound of the hearts that are breaking
Em                           C
And boots that are knocking pervades
       G                        D

Before the day that I first touched your face
Em                      C
Oh, the roar of these things filled my ears
         G                              D
Then I embraced you and (made partly deaf)
Em                        C
I could just hear our breath as we breathed
         G                           D

Up 'til that day I could hear them
Em             Em/B        C
And the sound as they broke, it was fearsome
           Em         Em/B          C
That was until your arms opened up wide
Em                        C
And the treasure therein was made mine
            G                       D

There is a noise that is taking their place
Em                         C
In the hollow of my inner ear
           G               D
It is far more than the sum of its parts
Em                      C
A white noise as warm as the sun
     G                        D, D7, AAAAAAAAAAHHHHHHHHHHH

Part 3:

Now that I've found you dear
C               G
Their plight has lost immediacy
        D         Em
And now that I've touched your face
       C            G
The noise fades from memory
      D    Em

I guess we'll forget the sound
C                 G
I guess, I guess
    D       Em
My cheeks will dry off in
C                 G
The sun, the sun
     D       Em

I guess we'll forget the sound
   C              G
I guess, I guess
    D       Em