One of the early classic blues singers, Rosa Henderson (no relation to Fletcher or Horace Henderson) first began singing professionally in 1913 with her uncle's carnival troupe. She was based in Texas until 1918 when she married Slim Henderson and began touring with the Mason Henderson Show. She mainly spent the '20s performing in musical comedies in New York. Henderson, who began recording in 1923, sometimes used such pseudonyms as Flora Dale, Mamie Harris, Rosa Green, Sarah Johnson, Sally Ritz, Bessie Williams, Josephine Thomas, and Gladys White on her records. In the late 1...