Warning Sign is another track taken from Coldplay’s ‘A Rush Of Blood To The Head’-album (2002)
The band’s frontman, Chris Martin, plays this song on guitar, where the 1st string is tuned down a whole step to D. Usually on stage he would capo it on the second fret. For the album version it should be place on the 3rd.
For the most part of the song he uses one chord shape, which is a C-shape with its lower 5th in the bass. One needs to move up and down quite a bit.
The strumming should be done in double time, accentuating beats 1, the and of beat 2 even more, and beat 4.
This lesson of course takes a look at both hands, goes over the progression, and how the song is arranged.