The melody of Promises In The Dark by Pat Benatar runs 286 notes across 97 bars, 5:00 long in Bb at 120 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? Promises In The Dark chords and lyrics.