Mercedes Sosa (born 9 July 1935, died 3 October 2009 in Buenos Aires) was an Argentinean singer inmensely popular throughout Latin America. With her roots in
argentinean folk music, she became one of the preeminent exponents of
nueva trova (new song). Sosa is greatly admired for the depth and beauty of her contralto voice. She is nicknamed "La Negra" by her fans for her long, jet-black hair.Actually she is nicknamed "La Negra" because that's the way in Argentina we called affectously to dark skinned and hair people...