Love that song, and banjo.
Double.
Tabs featured in the 1st video below.
The original vocal/band version is here:
https://youtu.be/rm9coqlk8fY
TUNING (from high to low): F#-G#-C#-F#-Bb-Eb ...or... F#-G#-C#-F#-A#-D# (same thing)
Justin Johnson: "Knockin' on Heaven's Door" (Bob Dylan)...
https://youtu.be/052z0qGPF8Q
- - - - - - - - - - - - - - -
Dark folk guitar.
TUNING (dropped D): D-A-D-G-B-E
Justin Johnson: "Don't Go Down (to the Village Below)"
His first appearance on Beato's channel is here:
https://youtu.be/PLIZZ9lIlwg
BEATO: "I interview world famous acoustic guitarist Tommy Emmanuel. At the age of six, he was touring Australia with his family band. By 30, he was a rock lead guitarists playing stadiums. At 44, he become one of five people ever named a Certified Guitar Player (CGP) by his idol, music icon Chet Atkins. Influenced by, the Merle Travis/Chet Atkins fingerstyle of guitar picking, Tommy developed a style of solo guitar playing that encompasses the range of a whole band - covering drums, bass, rhythm, lead guitar and vocal melody simultaneously."
The art of solo guitar playing.
Rick Beato: "Tommy Emmanuel returns" ...
https://youtu.be/Cn8XTWk1PS4
The original vocal/band version is here:
https://youtu.be/HyTpu6BmE88
In terms of scary slackness, the strings are supposedly tuned down yet a half-step lower than what's indicated below.
TUNING: C-G-D-G-C-D (capo on 4th fret)
Kent Nishimura: "That's What Friends Are For" (Dionne Warwick) ...
https://youtu.be/rUQBawhDtO4