Gamelan gender wayang is a style of gamelan music played on Bali, Indonesia. It is required for wayang and other, most sacred Bali Hindu rituals. The smallest of gamelan ensembles, it requires only two players and is complete at four, the additional instruments doubling an octave above. Like other gamelan genres it incorporates delicate interlocking melodies and active contrapuntal movement, yet poses unique challenges in technique and composition.