This "easy" arrangement is a semitone down from the original, in order to avoid playing almost the entire song on barre chords (Db root). Hit the transpose button next to the video to play in the original key (note: tabs are not tranposed), but be aware that the automatic transposition won't choose the best chord positions. Some barre chords are inevitable, due to the song's relentless key changes. The original starts in the key of Am, then changes to G, Bb, and finally Db.