Bamboo tube, one side closed. Two tongues and a crack up to the node; hole. The instrument isplayed by beating one of the tongues against the arm or wrist; sound can be changed by closingand opening the hole. Usually played by at least seven individuals, each with one buzzer. Playerplay their own rythmic pattern, all patterns fit together ('interlocking'). Players can form long rowswhile dancing in an open space (such as a central meadow).