Genggong

The genggong is a kind of jew's harp used in the music of Bali. It consists of a wooden frame and tongue cut from a single piece of the leaf stem of the sugar palm. The left end is held firmly against the cheek, while a string tied to the right end is jerked rhythmically to set the tongue into motion (in contrast to other jaw harps in which the tongue itself is plucked to produce sound). Different harmonics are produced by pronouncing different vowel sounds.