Gamelan

A Gamelan is a kind of musical ensemble of Indonesia typically featuring a variety of instruments such as metallophones, xylophones, drums, and gongs; bamboo flutes, bowed and plucked strings, and vocalists may also be included. 

The term refers more to the set of instruments than the players of those instruments. A gamelan as a set of instruments is a distinct entity, built and tuned to stay together — instruments from different gamelan are not interchangeable.

The word "gamelan" comes from the Javanese word "gamel", meaning to strike or hammer, and the suffix "an", which makes the root a collective noun.