Letta Mbulu is a South African jazz singer born and raised in Soweto. She has been active since the 1960s, but left for the United States in 1965 due to Apartheid. In the U.S. she worked with Cannonball Adderley, David Axelrod and Harry Belafonte. Her singing can also be heard in Roots, The Color Purple, and A Warm December, and she was a guest on a Season 6 episode of Soul Train. Mbulu also provided the Swahili chant in Michael Jackson's single, "Liberian Girl".