The pi chawa is pi song thon (ปี่สองท่อน) (pi that consist of two parts) like the pi chanai, but longer. It is made from wood or ivory. Presume Thai take in pi chawa as same time as glong khaek. From some evidence, they used pi chawa in Krabuan Phayuhayattra (กระบวนพยุหยาตรา, military march) in the pre-Ayutthaya period.
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