Zoila Augusta Emperatriz Chávarri del Castillo (September 13, 1922 (birth certificate) or September 10, 1922 (later documents) – November 1, 2008), known professionally as Yma Sumac (/ˈiːmə ˈsuːmæk/), was a Peruvian-American coloratura soprano. She was one of the most famous exponents of exotica music during the 1950s.