How interestin' -- Tim Duffy writes in his liner notes about "Baby Please Don't Go" (which Big Joe wrote):

As a young man, Joe Lee Williams (1903-1982) hobo'ed about, perfecting his craft in the church picnics, brothels, streets, roadhouses, railroad and levee camps of Mississippi. In an illustrious career spanning seven decades, Williams was Ambassador of Delta Blues to the world. Here, in a tuning that defies explanation, he takes us on a guitar tour de force through the classic "Baby Please Don't Go."

I guess maybe this delta style thing is a bit slippery, eh?

Bruce