A free program for Android, by Developer Receh.

Gamelan gong Kebyar Bali is the most popular and most traditional form of Balinese music. The music is made by combining several different musical instruments.  

The gong is used as the main melody, and it is the first thing you hear when you open the app. It has a very powerful and deep sound, and it is used to tell stories. Gong Kebyar is essentially a simplified version of Gong Gede with various fruit instruments playing a smaller or less important role. The word’s literal meaning is “Kebyar quickly, suddenly, and hard,” which describes the gamelan gong style, which is dynamic, hard, and has a quick pace. [3] There are five fundamental tones in gamelan gong Kebyar, known as barrel pelog: nding, Ndong, ndeng, ndung, and ndang.