Voice Of The Xtabay showcases Yma Sumac's otherwordly vocals, from operatic highs, to low, guttural growls.
Born in Peru, Yma Sumac's claim to fame is a four-octave (five at her peak) soprano. She could also sing as low as baritone, and produced this creepy "double voice" sound that I can only compare to the Tuvan throat singers of Sibera.
Most people associate her with mambo, but I love the eerie "Chuncho," from the aforementioned, Voice of the Xtabay, which showcases the full range of her amazing voice.
Yma Sumac died in 2008.