Wow. A word puzzle led me to discover Yma Sumac, 1932-2008, a Peruvian singer with a range of at least four and a half octaves. Listen to Yma Sumac sings Queen of the Night and Clair de Lune. I’d never heard of her before.

Now you've made me discover Yma Sumac. Incredible range. Also first time I've heard the Queen of the Night aria in a mambo version, it surprisingly works!