The melody of Amazing Grace by Judy Collins runs 167 notes across 36 bars, 1:55 long in Ab at 105 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? Amazing Grace chords and lyrics.