Gamelan with male groups. In the twenty-five countries outside Indonesia that have gamelan, music performed in a concert context or as part of ceremonies for expat communities may also accompany dance or "wayang". The tuning and construction of a gamelan orchestra is a complex process. Javanese gamelan use two tuning systems: "sléndro" and "pélog". There are other tuning systems such as "degung" (exclusive to Sunda, or West Java), and "madenda" (also known as "diatonis", similar to a European natural minor scale). In central Javanese gamelan, "sléndro" is a system with five notes to the octave, with large intervals, while "pélog" has
Gamelan in Central Javanese villages. Gamelan is also related to the Filipino "kulintang" ensemble. The variety of gamelan can befound in over 25 countries outside Indonesia, presenting both traditional and experimental repertoire. In oral Javanese culture distinctions are made between complete or incomplete, archaic and modern, and large standard and small village gamelan. The various archaic ensembles are distinguished by their unique combinations of instruments and possession of obsolete instruments such as the bell-tree ("byong") in the 3-toned "gamelan kodhok ngorek". Regionally variable village gamelan are often distinguished from standard gamelan (which have the "rebab" as the main melodic instrument) by