G on the Bass
62 G qualities. Pick one for the shape and the arrangement part.
All 62 qualities on the root G, in 10 families, drawn for this chair. Most country songs use three or four of them; the rest are here for the turnaround that reaches further.
The bass chair carries the root-and-fifth pulse everything else in the arrangement is timed against. Almost none of a chord is playable down here and almost none of it is wanted: the mix hears whichever note sits at the bottom as the chord, so the choice is which one, and when.