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 Gadhon (end-blown bamboo flute), and siter (plucked stringed instrument). Vocal parts called gerong (for male singers) or sindhen (for female singers) can be added in certain sections of pieces, as can alok, vocal cries that accent certain parts of the form or melody. Gamelan Gadhon A Gamelan Gadhon is an ensemble consisting of the "soft" instruments of the Javanese gamelan. This can include rebab, gendér, gendér panerus, voice, slenthem, suling, siter, gong, kempul, kenong and kendhang. The rebab, a two-stringed fiddle, is the melodic leader of the ensemble. The rebab player signals changes between sections of a piece, and to a