gDGBD relative ≈ fCFAC actual. I learned Sourwood Mountain from George Gibson of Knott County, Kentucky. George played it using a relatively heavy overhand style, and my version is very similar. As I attempt to explain in the video, I learned this as a free-wheeling banjo song, not as an "old time" fiddle tune with repetitive A and B parts.
Listen to George Gibson's version here: https://juneappalrecordings.bandcamp.com/track/sourwood-mountain-george-gibson

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