Performance Key: C Major
Capo: 5th Fret
Live Performance:The guitarist has a capo on the 6th fret and Dido is playing open chords with a capo on the first fret. Other versions, and ours, has the main guitar with a capo on the 5th fret. Therefore, the accompanying guitar doesn't need a capo.
Here's a guitar lesson for the accompanying guitar:
Chords for the verse and chorus: C C/B Am FMaj7
In the love performance Dido simplifies the chords and instead plays for the verses and chorus: C G Am F
This short video breaks the song down to its three parts: verse, chorus, and bridge:
(http://www.youtube.com/watch?v=1kPwOXTggr8#)