Just posted a video & write-up on how to play Amazing Grace in the style of John Fahey. It goes into more details about how you can: (1) learn the chords, (2) learn the melody, (3) combine both, (4) add more variations to come up with a Fahey-ized version of Amazing Grace, or many other similar types of melodies. It also gets into 3 types of picking patterns: modes 1, 2, and 3 - and using that language and framework it might help with knowing whether certain melody notes are "pinches" (that coincide with bass notes), or "alternating" melody notes (played between bass notes), or a type that Fahey used often - "pickups".