I'd never heard of her before a few days ago, and now I want to get some of her recordings. The Peruvian Songbird, who died recently, had over a four octave range (NPR said five octaves, which would be just insane). Most people can barely manage three, and it isn't something you can get better at through hard work. She had a freak voice box.
But I'll let you read more about her. At this site, there's also a recording clip.
And this is the NPR spot. Lots of recording clips.
http://www.npr.org/templates/story/stor ... d=96536505