Gamelan is the traditional ensemble music of the Javanese, Sundanese, and Balinese peoples of Indonesia, made up predominantly of percussive instruments. The most common instruments used are metallophones and a set of hand-drums called kendang, which keep the beat. The kemanak, a banana-shaped idiophone, and the gangsa, another metallophone, are also commonly used gamelan instruments on Bali. Other notable instruments include xylophones, bamboo flutes, a bowed string instrument called a rebab, and a zither-like instrument called a siter, used in Javanese gamelan. Additionally, vocalists may be featured, being referred to as sindhen for females or gerong for males.

The Balinese people are an Austronesian ethnic group native to the Indonesian island of Bali. The Balinese population of 4.2 million live mostly on the island of Bali, making up 89% of the island's population. There are also significant populations on the island of Lombok and in the easternmost regions of Java.