Wassoulou
Wassoulou (var. Wassulu, Wassalou, Ouassalou) is an historic region in southwest Mali, northeast Guinea (Prefectures of Kankan, Kerouané, Beyla, and Siguiri) and the area west of the Sankarani river and south of the Niger River in Mali and Côte d'Ivoire. Centered on the town of Yanfolila (in the Cercle of Yanfolila, and the Sikasso Region, 150 km south of Bamako), historic Wassoulou has an estimated population of 160,000. Other towns in Wassoulou include Madina Diassa and Bougouni. The region is named for the Wassoulou river valley.
Wassoulou is not the name of any formal governmental entity in any of the three modern nations into which it falls, but rather an historic, cultural region. It should not be confused with the formal Regions of Mali, the Regions of Côte d'Ivoire, or the Regions of Guinea.
Culture
Wassoulou is best known internationally as the birthplace of Wassoulou music, a style which blends traditional and modern influences with strong female vocalists and a pentatonic hunter's harp. Wassoulou music is one of the two forms of West African music ethnomusicologists believe to be the origin of the American blues, which developed out of music forms dating back to the American slave trade from West Africa. Some of the most famous residents of Wassoulou include the singers Oumou Sangare, Ramata Diakite and Coumba Sidibe.