Mercedes Sosa (born July 9, 1935 Mercedes Sosa at BrainyHistory.com) is an Argentine singer immensely popular throughout Latin America. With her roots in Argentine folk music, she became one of the preeminent exponents of nueva canción. Sosa is nicknamed "La Negra" by her fans for her long, jet-black hair. She is best known as the voice of the "voiceless ones". Singer Mercedes Sosa: The voice of the 'voiceless ones' outlasts South American dictatorshipsSosa was born in San Miguel de Tucumán, in the northwestern province of Argentina, of mestizo descent from French and Amerindian (Quechuan) ancestry. In 1950, at age fifteen, she won a singing competition organized by a local radio station and was given a contract to perform for two months.]]Sosa and her first husband, Manuel Oscar Matus, with whom she has one son, were key players in the mid-60s nueva canción movement (which was called nuevo cancionero in Argentina). Her first record was Canciones con Fundamento, a collection of Arge
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http://en.wikipedia.org/wiki/Mercedes Sosa