The melody of A World Alone by Lorde runs 548 notes across 115 bars, 4:46 long in E at 116 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? A World Alone chords and lyrics.