Yes, and the "Oh Mourner" "Ain't no use" verse also appears in the "Talking Blues." But the "This Morning, This Evening" part isn't there...and I think that's the determinant.

Truth is, the "Ain't no use" verse and its concomitants "She thinks I'm workin'", etc. are floating verses that turn up in several other songs. IMO, that doesn't create a relationship between them.

What intrigues me is the possibility that, way back, there might be a 19th century Afro-American spiritual / gospel song with the refrain "This morning, this evening." I'm looking in what sources I have, no luck yet.

Bob