I just discovered Core Wrecka, above, one half of the Maseru, Lesotho rap duo, Corporate Nemesis. These guys have been going since 2001 (read their blog). Late last year Core Wrecka released the song “Yesterday” (link below). They describe their music as
… not Sesotho funk. This is not mountain pop. This is hardcore hip-hop delivered with a gutteral growl akin to the style which has been perfected by the long-standing tradition of Basotho freestyle rappers (liroki), and replete with call-and-response chants which have become a staple of Basotho music.