Gnawa music originated in the Maghreb from the cultural practices that Black African slaves brought with them. It is called Gnawa in Morocco, Diwan in Algeria, and Stambali in Tunisia and Libya.
The traditional kora belongs to the African harp family off Mandinka origin. Its resonance box consists of cow skin stretched over a half gourd. 21 strings made of animal innards are attached to a long stick that stretches the length of this gourd.