Big Timers (1945). Lincoln Perry (a.k.a. Stepin Fetchit) rapping back in the 1940s. The African American girl band in the back is called The All-American Girl Band.
Starring Stepin Fetchit, Francine Everett, Lou Swarz, Gertrude Saunders, Duke Williams, Tarzana, The All American Girl Band, Milton Woods, Walter Earle