Gamelan is the percussion orchestra of Indonesia. Gamelan is a set of traditional music instruments mostly made of hand-forged metal (bronze, brass, and iron). Gamelan consist of slab-type (wilahan) instruments: saron/sarun/pemade, demung/sarun ganal, gender/kiliningan, slenthem/selentem/jegogan, peking/sarun paking/kantilan, kecrek/keprak, and gong-type (pencon) instruments: gong, kempul, kenong, bonang, trompong, kethuk, and kempyang. Other instruments, e.g., zither and seruling (bamboo flute). Gamelan instruments are played by beating (gong, saron, demung, slenthem, kecer); plucking and strumming (siter, kecapi, rebab); tapping (kendang); and blowing (flute). The pitch and tuning of gamelan are slendro and/or pelog (pentatonic and/or heptatonic), each has its own frequency and interval pattern. Lower and higher pitched instrument pairs, together, they produce Indonesian Gamelan melodies, which resonate the sound of ombak (beats) or pelayangan (vibrato). Gamelan music has its own techniques and forms, i.e., one melody performed simultaneously by the different instruments (heterophony), the technique of interlocking multiple instruments to structure their rhythms (interlocking part), and the rhythmic and metric patterns of beat and punctuation (colotomic punctuation). Gamelan is used for human life-cycle rituals and ceremonies, mental-health therapy and other purposes, e.g., to refine character, develop life skills, increase study concentration, self-confidence and motivation. As entertainment, Gamelan is performed at music concerts, theatres, and other artistic expressions. Archaeological evidence of gamelan was found in the bas-reliefs of the 8th-century Borobudur temple. Gamelan is widely known in Indonesia and abroad.

Indonesia 2021