Nkhwaipada means obsidian in Hnyahnyu (Otomi): an indigenous language from Mexico. Literally, it means Knife of Vulture.
A gourd instrument with one string is played with a Native American Flute. Both instruments were made by Kunje. He is a musician, dancer, and maker of many types of indigenous instruments. He resides and works in San Luis de la Paz, Mineral de Pozos, Guanajuato, Mexico.