Hi!
Bruce has covered Lorde's "Royals" when he was in New Zeland this month and I fell in love with his cover version!
I'm pretty sure he uses another tuning for this cover. Take a look at the video (good quality video), the chords aren't that hard, but it's to hard for me to figure out which tuning and which chords he uses. I really hope someone can help me out with this one! 
Video: http://www.youtube.com/watch?v=zhjzbWt-grY
Thanks a ton!