http://www.youtube.com/watch?v=sYrK464nIeY&feature=related
'Black Betty' LEADBELLY, Blues Legend

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Leadbelly's version reminds me of a number of African American girls' playground rhymes, especially the rhyme "Pizza Pizza Daddy-O" that is one of the rhymes featured in this "1967 film by Bob Eberein and Bess Lomax Hawes that looks at continuity and change in [African American]girls' playground games at a Los Angeles school":


http://www.youtube.com/watch?v=N2YodFqZ7nQ