Silver Supporting Member
You're still ignoring the point...last try...It certainly seems like it’s all relative to what you are tying to accomplish with your lines.
Some people don’t have a goal when playing - nothing really wrong with that. They will figure it out someday. (“‘Till we have faces” and all that). And I’m not sure where I stand in all that specific frequency or specific interval stuff people get all fired up about - not advocating for that at all. But at the same time I’ve seen some amazing stuff done with it (some of the Peruvian whistling stuff can be nuts).
Seems, though that a “bass player playing nothing [well mostly] inner voices” would include blowing over Phil - essentially the exact topic of the OPs post here.
But, give the thirds trick a try. It may be silly but you’ll be surprised. Nothing ever accomplished with a melody that starts on the root.
The harmony can't be defined quite well with nothing but the bass tone (in your usage root note).
Not one word about melody...
What I'm saying is to lay out any progression and it's function (the stuff you wanna blow over) you need nothing more.
It also doesn't mean that no additional voices are required it means that they are optional as in interchangeable by function