The melody of Battlefield by Jordin Sparks runs 611 notes across 59 bars, 3:30 long in Em at 72 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? Battlefield chords and lyrics.