The khong wong yai is a circle with gongs used in the music of Thailand. It has 16 tuned bossed gongs in a rattan frame and is played with two beaters. The player sits in the center of the circle. It is used in the piphat ensemble to provide the skeletal melody the other instruments of the elaborate ensemble. The gongs are individually tuned with beeswax under the gongs. The khong wong yai can either be played with soft beaters or hard beaters.

A piphat is a kind of ensemble in the classical music of Thailand, which features wind and percussion instruments. It is considered the primary form of ensemble for the interpretation of the most sacred and "high-class" compositions of the Thai classical repertoire, including the Buddhist invocation entitled sathukan as well as the suites called phleng rueang. It is also used to accompany traditional Thai theatrical and dance forms including khon, lakhon, and shadow puppet theater.