When You Were Young by The Killers is in E at 128 beats per minute and runs 3:09 across 46 bars. It uses 16 chords — E69, E5, F#5, G#5, B5, E, F#, G#m, and a few more. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? When You Were Young guitar melody tab.