Michael Tenzer has written:

'Gamelan Gong Kebyar'

gong is originally from China. but Gong Ageng itself is from Indonesia. Gong Ageng is a Javanese phrase which means "big gong". Gong Ageng is a part of Gamelan ensemble and the most important gong in Gamelan.

A gamelan is a music ensemble from Indonesia, typically from the islands of Bali or Java. GO to http://en.wikipedia.org/wiki/Gamelan to find out more

Bali is one of the islands Gamelan originated from.

A gangsais a type of metallophone which is used mainly in Balinese and Javanese Gamelan music. In Balinese gong kebyar styles, there are two types of gangsa typically used: the smaller, higher pitched kantilan and the larger pemade.