Thanks Q- great version. It's very similar to the one used by the early white string bands.

The relationship between "This Morning" and "The Crawdad Song" is evident in this song from Sharp's EFSSA p. 275

Lyr ADD: The Crow-fish Man
Collected by Cecil Sharp, June 2, 1917 from Mrs. Wilson Ky.

Wake up, darling, don't sleep too late,
The crow-fish man's done passed our gate,
This morning, so soon.

Selling crow-fish two for a dime,
Nobody's crow-fish eats like mine,
This morning so soon.

Around the mountain I must go,
If anything happens let me know,
This morning so soon.

Come to my house, just come to my field;
If you can't bring money bring meat and meal;
This morning so soon.