What is "mahlathini"

Simon 'Mahlathini' Nkabinde (1938 – 27 July 1999) was a South African mbaqanga singer. Known as the "Lion of Soweto", Nkabinde is the acknowledged exponent of the deep-voiced, basso profundo "groaning" style that came to symbolize mbaqanga music in the 1960s. Nkabinde was also a very active live performer in South Africa, recording and performing with the Mahotella Queens and the backing Makgona Tsohle Band from 1964 to 1971, and then again from 1983 to 1999. The Mahlathini and the Mahotella Queens act was propelled into international stardom in the wake of Paul Simon's Graceland (1986) album.