Hi guys. =) So my friend recently fell in love with this song and couldn't find a chord sheet for this,
so I'm doing one for her. To the rest of you who loves this song, I hope I tabbed it out properly as this is 
only the third time I'm doing this. Enjoy. =)

Intro
G D A

Verse
G                              D     A
Whole world is watching us now
G                         D     A
It's a little intimidating
G                                    D     A             
But since there's no way to come down
G                                D      A
Let's give 'em something amazing

Prechorus
Em         G    D    A
Let's make them remember
Em    G         D    A
Using one word

Chorus
          G    Bm    
Incredible
D              A
(Oh oh oh oh oh)
          G    Bm  
Incredible
D              A
(Oh oh oh oh oh)
Em         G    D    A
Let's make them remember
G         A
We were incredible
D        A
Simply incredible

Verse 2
G                      D     A
We even counted us out
G                           D     A
We weren't sure we'd make it
       G                                   D     A
But we learned no matter what they dish out
G                            D     A
It's nothing, we can take it

Prechorus 2
Em       G       D    A
We'll go down in history
Em                   G       D    A
They'll describe our love as

Chorus 2
          G    Bm  
Incredible
D              A
(Oh oh oh oh oh)
             G    Bm  
Oh incredible
D              A
(Oh oh oh oh oh)
Em         G    D    A
Let's make them remember, That we were
G         A
We were incredible
D        A
Simply incredible


Prechorus 2

Chorus 2

Outro
G
D              A
Let's give 'em something amazing

Here it is, Enjoy guys. =)