The previous tab of this song was only half correct, first of all, if you want to get it sound right, you need to tune your guitar half step down. Excuse all of the names of the different chords, I'm not very good at naming them. The features pretty simple C/G/Fm/Am/Dm pattern, however Conor plays them with variations, why during some parts of the song if you try to play standard C chords, they are going to sound quite right. Another thing, I wasn't really sure about whether played F or Fmaj (guitartabs.cc)