The only chords used are:

D5 , A5 , F#5 , E5

These will last the entire song for all verses.

VERSE 1:
D5
I was up in my head
A5
For everything I said
F#5
Quarter million words
E5
They're all made with lead
D5
I bought a megaphone
A5
To use inside your home
F#5
Forgot the batteries
E5
But that's the old me

D5           A5
Shouting out of my windows
F#5           E5
Rolled down
D5          A5
Cuz I don't care anymore
F#5    E5
Said I don't care 

LET'S GO LET'S GO LET'S GO LET'S GO

CHORUS:

D5               A5
Ooooooooooh ooooooh ooooooh

F#5          E5
Ooooooooooh ooooooh ooooooh  x 2

VERSE 2:

D5
I'm standing on the top
A5
Of a parking lot
F#5
I gave it all I had
E5
Show me what you got

There's some things I found 

That make so much sound

All these words

I don't need em now

D5             A5
Shouting out of my windows
F#5    E5
Rolled down
D5                A5
Cuz I don't care anymore
F#5           E5
Said I don't care 

LET'S GO LET'S GO LET'S GO LET'S GO

CHORUS

BRIDGE:

D5 , A5 , F#5 , E5
D5 , A5 F#5 , E5

D5
Say what you wanna say
A5
Make it mean everything
F#5
Oh say what you wanna say
E5
Make it mean everything   X2

LET'S GO LET'S GO LET'S GO LET'S GO

CHORUS