Gender Wayang is a 10-key metallophone, coming in pairs, most be doubled from an other pair one octave higher, tuned in Slendro scale. As Gender Wayang is played with two panggul (mallets) - other than the Gangsa in Gong Kebyar - two player together play the melody (left hand) and the interlocking parts kotekan (right hand) as a complete „mini“ Gamelan.

Gamelan Gender is intended as a practicing tool. Play the polos part, while Gamelan Gender plays the sangsih, loop parts to memorize, generate your own songs as midi file in a sequencing program, import it into Gamelan Gender. Its keys can be tuned, to match your real instruments - this is important, as every set of Gender Wayang has its own tuning.