Yma Sumac (September 13, 1922 – November 1, 2008), was a Peruvian-American soprano. In the 1950s, she was one of the most famous proponents of exotica music. Sumac became an international success based on her extreme vocal range, which was said to be "well over five octaves" or otherwise was claimed to span over five octaves, at the peak of her singing career.