Although gong orchestras consisting of gongs, metallophones, and xylophones bind Southeast Asia into one musical cultural group, the types of ensembles and sounds they form may be classified into four areas. Java and Bali make up one unit because of their predominant use of bronze instruments in orchestras that make one homogeneous sound. Thailand, Laos, and Cambodia form another subdivision, with families of musical instruments producing heterogeneous sounds: the bronze group makes slowly decaying sounds, wooden xylophones play short sounds, and a reed blows a penetrating melody accompanied by a fourth group of cymbals, drums, and another gong. Burmese orchestras differ from the Indonesian and Thai groups by the unique use of a row of tuned drums (sometimes called a drum circle), with sounds consisting of sharp attacks and quick-vanishing waves. The fourth area, Indonesia, Malaysia, and the Philippines, uses several types of suspended and horizontally laid gongs. These gongs produce various combinations of sounds. In Nias, an island west of Sumatra, one group of three heavy suspended gongs plays three rhythms of homogeneous sounds. Suspended gongs with a wide rim and a high knob (or boss) are played alone, with another gong or with a drum on the Philippine islands of Mindanao and Palawan and the Indonesian island of Kalimantan (Borneo). Gongs laid in a row, called kulintang, are melody instruments accompanied by a percussion group. The most developed melodies are found in Mindanao, and the area of distribution extends to Borneo, Sumatra, and Celebes, in Indonesia. The sets of tuned gongs found throughout Southeast Asia are also called gong chimes, gong kettles, and gongs in a row.
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Although gong orchestras consisting of gongs, metallophones, and xylophones bind Southeast Asia into one musical cultural group, the types of ensembles and sounds they form may be classified into four areas. Java and Bali make up one unit because of their predominant use of bronze instruments in orchestras that make one homogeneous sound. Thailand, Laos, and Cambodia form another subdivision, with families of musical instruments producing heterogeneous sounds: the bronze group makes slowly decaying sounds, wooden xylophones play short sounds, and a reed blows a penetrating melody accompanied by a fourth group of cymbals, drums, and another gong. Burmese orchestras differ from the Indonesian and Thai groups by the unique use of a row of tuned drums (sometimes called a drum circle), with sounds consisting of sharp attacks and quick-vanishing waves. The fourth area, Indonesia, Malaysia, and the Philippines, uses several types of suspended and horizontally laid gongs. These gongs produce various combinations of sounds. In Nias, an island west of Sumatra, one group of three heavy suspended gongs plays three rhythms of homogeneous sounds. Suspended gongs with a wide rim and a high knob (or boss) are played alone, with another gong or with a drum on the Philippine islands of Mindanao and Palawan and the Indonesian island of Kalimantan (Borneo). Gongs laid in a row, called kulintang, are melody instruments accompanied by a percussion group. The most developed melodies are found in Mindanao, and the area of distribution extends to Borneo, Sumatra, and Celebes, in Indonesia. The sets of tuned gongs found throughout Southeast Asia are also called gong chimes, gong kettles, and gongs in a row.