Heartbeat Song by Kelly Clarkson is in Cb at 149 beats per minute and runs 3:17 across 83 bars. It uses 7 chords — Gb, Bbm7, Ebm, Cb, Db, N.C., Bbm. 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? Heartbeat Song guitar melody tab.