Pi Phu Thai is a musical instrument of the Phu Tai ethnic group. In the northeastern part of Thailand, made of bamboo, used for the ancestral ceremony of the grandfather, the Mo Yao ceremony, the Phu Tai dance, and the Phu Tai dance.
In addition, it has also been applied to Isan folk bands such as Pong Lang band, which has gained widespread popularity. The most popular song designs are Phu Thai Yai and Phu Thai Noi.