This is one of my all-time favorite Coldplay songs. It is basically the same as the tab 
used to learn this song, with a few revisions. I have never seen Chris play this song, 
i dont think its completely right, but it works for me.

Intro: Am Bbm7 Am C7 Bbm6 Am6     C Am C Am C Am C Am

Verse 1:
C                           Am
Did I drive you away?
C                                    Am
Well I know what you'll say
Fmaj7                                       C
You say "Oh, sing one you know"
C                             Am
But I promise you this
C                     Am          Fmaj7
I'll always look out for you
                                C
Yeah that's what I'll do

Chorus:
     Am Bbm7 Am C7 Bbm6 Am6
I say ohhhhhhhhhhhh
     Am Bbm7 Am C7 Bbm6 Am6
I cry ohhhhhhhhhhhh

C Am C Am C Am C Am

Verse 2:
(The chord pattern is pretty much the same on this verse, except where indicated)

My heart is yours
C                  Am        Fmaj7
Its you that i hold on to
F                      C
Yeah thats what I do
And i know i was wrong
But I wont let you down
C                            Am            Fmaj7
(Oh yeah, Oh yeah, I will, Yes I will)

Chorus:
I say ohhhhhhhhhhhh
I cry ohhhhhhhhhhhh

                 C        Am
Yeah I saw sparks
Yeah I saw sparks
And I saw sparks
Yeah I saw sparks
Sing it out

C             Am             C
La, La, La, La, oh, La, oh
La, La, La, La, oh, La, oh
La, La, La, La, oh, La, oh

Am         002210
Bbm7     002110
C7          032310
Bbm6     004210
Am6       003210
C            032010
Fmaj7     033210