Often illness and unexplained deaths are believed to be caused by offended ancestors or neglected deities.
The sorcerer identifies the cause of the problem and prescribes a remedy.
The wooden - slit drum is the symbol of the sorcerer but is also used as the sorcerer´s seat and as a container in which to prepare medicines.
Devisch René :The Therapist and the Source of Healing among the Yaka of Zaire. 1990
Beek, Walter E. A. van, and Philip M. Peek. (2013) - Reviewing Reality: Dynamics of African Divination.
de Beir, L. - Religion et magie des Bayaka. 1975
Michel Plancquaert - Les Sociétés Secrètes chez les Bayaka, Louvain, Imprimerie J. Kuyl-Otto, 1930
Michel Plancquaert - Les Jaga et les Bayaka du Kwango. 1932
Bourgeois, Arthur, P. - Art of the Yaka and Suku, Meudon, Alain and Françoise Chaffin, 1984
Bourgeois, Arthur, P. - Kakungu among the Yaka and Suku. African Arts 14
Pemberton, John - Insight and Artistry in African Divination.