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 Sekaten in the development of the gamelan because it marked the change from the use of the "bonang" as the most important melody instrument, as it is in the earlier "Munggang" and "Kodokngorek" ensembles, to "leading" the ensemble by playing the pitches in anticipating patterns. In the ensemble, players sit on opposite sides of the "bonang", which may have led to the modern configuration of pots, which is aimed at making octaves comfortable. Gamelan Sekaten The Gamelan Sekaten (or Sekati) is a ceremonial gamelan (musical ensemble) from central Java, Indonesia, played during the annual "Sekaten" festival. The word ""sekaten"" itself is