This tab is based off the live acoustic version he posted on youtube, but the only difference between it and the studio version is the studio version is a half step higher. In other words, just put your Capo on the first fret and use the same chords for the studio version. I personally think the live acoustic version is way better but that's just my opinion. Either way these chords will work for ya. If you want to hear how I do it, is the link to my cover. Or here's the video of Luke doing it (guitartabs.cc)