The saw duang (Thai: ซอด้วง, pronounced [sɔː dûəŋ], RTGS: so duang) is a two-stringed instrument used in traditional Thai music. The sound is produced by the bow made from horsetail hair which goes between the strings made from silk. The bow has to be tilted to switch from one string to another. Saw duang is light and played vertically on the lap. It creates a bright tone unlike the Saw u which produces a mellow sound. Another instrument which is similar to the Saw duang is the Chinese stringed instrument called Huqin.