Letta Mbulu has been played on NTS over 190 times, featured on 194 episodes and was first played on 15 October 2012.

Letta Mbulu (Soweto, 23 August 1942) is a South African jazz singer born and raised in Soweto, South Africa. She has been active since the 1960s, but left South Africa due to Apartheid in 1965 and moved to the United States. There she worked with Cannonball Adderley and Harry Belafonte. Her singing can also be heard in Roots (TV miniseries), The Color Purple, and she was a guest on a Season 6 episode of Soul Train.