The melody of I Won’t Back Down by Tom Petty runs 120 notes across 34 bars, 1:34 long in G at 115 beats per minute. The tab sits almost entirely in the first two frets, 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? I Won’t Back Down chords and lyrics.