The melody of Heartbeat Song by Kelly Clarkson runs 509 notes across 83 bars, 3:17 long in Cb at 149 beats per minute. The tab sits low on the neck, mostly under the fourth fret, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? Heartbeat Song chords and lyrics.