Mama Africa has died of a heart-attack after a performance in Italy. story I learned about her a few years back when I watched Amandla, a documentary about the role of music in South Africa during apartheid. I love the music in that movie.
I don't want to force a movie on anyone. But I highly recommend it.
Her most famous song is Pata Pata. Acute listeners will recognize the song from Season 3 in NBC's now canceled, Las Vegas.
Pata Pata - http://www.youtube.com/watch?v=Pygqt0uwnuc
Amandla Trailer - http://www.imdb.com/video/screenplay/vi532021529/