Singer Yma Sumac dies at 86; famed for vocal range

Zoila Augusta Emperatriz Chávarri del Castillo

http://www.yma-sumac.com/

http://en.wikipedia.org/wiki/Yma_S%C3%BAmac

and this from All Things Considered:

http://www.npr.org/templates/story/story.php?storyId=96536505