All types of Khon, from khon klang plaeng to Khon na Chor, has a special musical instrument called “Krong”. Krong is made from big bamboo stems with 3-4 meters long, supported at both ends, 8 centimeters above the floor. 4-5 persons sit in line, holding Krub (a wooden rhythm instrument) in both hands, make the rhythms. Only mirthful songs such as Krao Nok, Krao Nai, or Cherd are performed at the back of the screen. Khon peformers have no participation in the rhythm produced.