Originaly it is a tribal instrument and it was created to imitate the sounds of nature by indigenous people & has been shaked by them during ceremonies to summon the supernatural beings. Chach-chas called also chajchas (name came from the sound of moving seeds), originaly belong to tribal percussive instruments made from Kenari seeds. These seeds comes from yellow oleander tree, also called the whispering tree because of the sound it makes when the wind blows its branches. Kenari seeds are considered by some of Amazonian indigenous tribes as lucky nuts. The Kenari chajchas comes from Amazonian region of South America. This instrument consist from Kenari seeds attached to a wood handle.
Peruvian ChajCha Seed Rattles