Along with Helen Carter, what is the name of the member of "Mother Maybelle and the Carter Sisters" who wrote "Juke Box Blues"?
Helen Carter Helen Myrl Carter (September 19, 1927 – June 2, 1998) was an American country music singer. The eldest daughter of Maybelle Carter, she performed with her mother and her younger sisters, June Carter and Anita Carter, as a member of "Mother Maybelle and the Carter Sisters", a pioneering all female country/folk music group. The group was also known as The Carter Family.
Ma Rainey "Ma" Rainey (born Gertrude Malissa Nix Pridgett, September 1882 or April 26, 1886 – December 22, 1939) was one of the earliest African American professional blues singers and one of the first generation of blues singers to record. She was billed as the "Mother of the Blues".