The gongs are made of brass alloy or a mixture of brass and gold, silver, bronze. Their diameter is from 20cm to 60cm or from 90cm to 120cm. A set of gongs consists of 2 to 12 or 13 units and even to 18 or 20 units in some places. 

In most of ethnic groups, namely Gia Rai, Ede Kpah, Ba Na, Xo Dang, Brau, Co Ho, etc., only males are allowed to play gongs. However, in others such as Ma and M�Nong groups, both males and females can play gongs. Few ethnic groups (for example, E De Bih), gongs are performed by women only.

As for the majority of ethnic groups in Central Highlands, gongs are musical instruments of sacred power. It is believed that every gong is the settlement of a god who gets more powerful as the gong is older. "God of gong" is always considered as the tutelary deity for the community�s life. Therefore, gongs are associated to all rites in one�s life, such as the inauguration of new houses, funerals, buffalo sacrifice, crop praying rite, new harvest, ceremony to pray for people�s and cattle�s health, ceremony to see-off soldiers to the front, and the victory celebration.

In Central Highlands, gongs are often performed in the form of orchestra. Gong orchestras adopt a natural sound-scale as the foundation for theirs. Depending on different ethnic groups, a gong orchestra can consist of 3, 5 or 6 primary sounds. However, as a polyphonic musical instrument, gongs often have some additional sounds apart from their basic ones. In fact, a six-gong orchestra can produce more or less 12 different sounds. So, gong sounds are heard resonant and solid. Moreover, a gong orchestra is arranged in a broad space, so the melody is formed by three-dimensional sounds with different pitch, length and resonance. It is the stereophonic effect - an original phenomenon of gong performance.

The space of gong culture in Central Highlands are heritage with temporal and spatial imprints. Through its categories, sound-amplifying method, sound scale and gamut, tunes and performance art, we will have an insight in a complicated art developing from simple to complexity, from single to multi-channel. It contains different historical layers of the development of music since the primitive period. All artistic values have the relationships of similarities and dissimilarities, bringing about their regional identities. With its diversity and originality, it�s possible to confirm that gongs hold a special status in Viet Nam�s traditional music.

On November 25, 2005 in Paris, France, the space of gong culture in Central Highlands was recognized by UNESCO as an oral-transmitted masterpiece and intangible cultural heritage of the humanity.