Drop D tuning I find works best for those quick changes and the heavier sound but it's player preference. Great song by one of the most exciting new rock n' roll bands. Here the chords, listen for the rythm. Intro: B A D G F# B Verse: B D E B Chorus: B A D G F# B Verse: B D E B Chorus: B A D G F# B Intro: B A D G F# B Chords over guitar solo same as chorus That's it. Easy.