Kaco (drum)
The kaco is a type of shamanistic drum of the Ainu people, primarily those of Sakhalin Island. Construction. The instrument is made of a wooden branch of willow or larch bent into an ellipse with a membrane of musk deer skin; the drum beater is covered in dogskin. Etymology. The word "kaco" may be a loan-word from the Orok language. The drum may be more formally called "senisteh", a word referring to charms in general.