the suling's body. Depending on the distance of nearest hole to the suling's head, different notes can be produced. The airflow speed also can modify the tone's frequency. A note with twice frequency can be produced mostly by blowing the air into suling's head's hole with twice speed. Generally, the shorter the suling the higher the pitch. This simple suling produces tunes or melodies that have traditionally been interpreted as the sound of joyful learning. There are many regions in Indonesia that use suling as a traditional instrument and have different local names for it. In Java, Sunda, and Bali, this instrument is commonly called suling, in Minang it is called saluang, in Toraja, it is called Lembang flute, in Halmahera, it is called bangsil, and in West Nusa Tenggara it is called silu. Suling is an Indonesian bamboo ring flute which is used in various traditional musical ensemble performances, including gamelan, gambus, and dangdut. This flute is made of a long, thin-walled bamboo tube called tamiang and a thin rattan band encircles the mouthpiece. Kacapi suling Kacapi suling is a type of instrumental music that is highly improvisational and popular in parts of West Java that employs two instruments, kacapi (zither) and suling (bamboo flute). It is related to tembang sunda. The rhythmic strains of the kecapi are slow in tempo, produced by strings that blend into soft music when combined with the melody of the suling or melismatic vocals. The kacapi is a traditional zither of Sundanese musical instrument derived from the Chinese , and similar to the Japanese koto, the Mongolian , the Korean , the Vietnamese and the Kazakh jetigen, and suling is a bamboo flute. Kendang Kendang or Gendang is a two-headed drum used by peoples from Indonesian archipelago. Among the Javanese, Sundanese, or Balinese peoples, the kendang has one side larger than the other, with the larger, lower-pitched side usually placed to the right, and are usually placed on stands horizontally and hit with the hands on either side while seated on the floor. Amongst groups like the Balinese both sides are of equal size, and are played on either one or both sides using a combination of hands and/or sticks. Among the Makassarese, the Ganrang drums have much more importance, with it considered the most sacred of all musical instruments, comparable to gongs in Java. One of the best known variations of the