Happiness by The Fray is in Db at 75 beats per minute and runs 5:10 across 72 bars. It uses 7 chords — Fm7, Dbsus2, Ab5, Ab, Eb, Ebm, Db. 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? Happiness guitar melody tab.