It Happens by Sugarland is in Ab at 170 beats per minute and runs 2:30 across 78 bars. It uses 9 chords — Eb5, N.C., Ab5, Cm, Ab, Eb, Bb, Absus, 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? It Happens guitar melody tab.