Classy Girls by The Lumineers is in C at 122 beats per minute and runs 2:35 across 55 bars. It uses 5 chords — C, F, G, G6, G7. 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? Classy Girls guitar melody tab.