The tro ou chamhieng () is played "exclusively" by Cham who live in Cambodia and has a sound-bowl resonator made from a turtle shell. It is played in the Bassac theater orchestra and the yike orchestra. It originally came from the kanyi - fiddle of Cham people in Vietnam. The body of the kanyi is made of a golden tortoise shell. On the body of the golden tortoise shell, there is a small piece of bamboo about the size of a big toe, about 0.65cm long. At the beginning of this bamboo segment, there are two rods to pull the rope called two kanyi pegs. From two pull rods (two ears) connected to the bamboo by a string is the main string of kanyi. In addition, this pull rod is connected to the bamboo with ponytail that bends like a bow. This is the string that pulls the kanyi to make the sound.
