It says it all in the title. Its actually an amazing song if you listen to it.

This song is evidently one hundred percent within the key of C major. Melodyne is sometimes not accurate at deciphering exactly what's going on within a song, but it is good enough to determine that every note is within C and that C maj or some close variation is the tonic chord. So basically, this song likely consists of C maj, and likely a few of these chords: E min, G man, D min, A min, or F maj. I didn't hear any thing that sounded like an augmented chord or diminished chord so I think that should be a good starting point. I like this song too. The lyrics are quite good IMHO especially

I had some limited luck with this one after spending some time with it. the main chords here are c, f, and g. he or whoever is playing guitar does some variations on the chords at times. for instance, if you play an F (in standard tuning) X-X-3-2-1-1, (ill just say "he" cause chris martin wrote it), he might do something like X-X-2-0-1-0 or with a c chord, he might use the fifth string 2nd fret (b note) as the base note occasionally without changing anything else (X-2-2-0-1-0 or X-2-0-0-1-0). see if that helps and if not i'll try working it out better. cheers