Bonang

The bonang is an Indonesian musical instrument used in the Javanese gamelan. It is a collection of small gongs (sometimes called "kettles" or "pots") placed horizontally onto strings in a wooden frame (rancak), either one or two rows wide. All of the kettles have a central boss, but around it the lower-pitched ones have a flattened head, while the higher ones have an arched one. Each is tuned to a specific pitch in the appropriate scale; thus there are different bonang for pelog and slendro.