I'm not sure what the third Chord is exactly. I play an Am without the A base. So 
it looks like this
E--0----
B--1----
G--2----
D--2----
A--x----
E--x----

If you are strumming, a normal Am sounds finds, however, if you want to accent the 
base not, don't hit the A string, hit the D string. All other chords are played normally.

           Dm    C
Behind the sweet
       Am
Summer fade
         Dm
And on a coast
    C     Am
Not Far away
             Dm    C
Sometimes we glide
             Am
Sometimes we fall
              Dm
And there are times
             C     Am
We don't get up at all

              Dm    C
You had your doubts
           Am
We had our rows
          Dm
Said our goodbyes but
          C      Am
Now we're taking vows

           Dm   C
Behind the sweet
       Am
Summer fade
                Dm
You'll knock me down
       C     Am
Like a tidal wave

            Dm   C
I should be gone
       Am
Cast away
              Dm
But still I'd love you
        C             Am
Through all peace and hate

            Dm  C
In light of all
        Am
Darkest things
           Dm
The fire glimmers
         C        Am
And the darkness sings

(I think you get the idea)

If you should go
I won't have you to blame
For my unhappiness for darker days
When will I learn
It's not your fault
Breaking down could not
Be cured by breaking up
Cause breaking down could not
Be cured by breaking up

I should be gone
Cast away
But still I'd love you
Through all peace and hate

In light of all
Darkest things
The fire glimmers
And the darkness sings

Forever more
Peace and hate
Love and war
Declare a new state

Forever more
Peace and hate
Love and war
Declare a new state

Yell and shout and kick me out
Then forget what we fought about
But don't give up
These storms are passing

Yell and shout and kick me out
Then forget what we fought about
But don't give up
This storm is passing