Each angklung consists of two or three bamboo tubes of differing lengths tuned in octaves. The tubes are mounted in a frame so that a slot on each tube aligns into a cross-piece that strikes the tube when the instrument is shaken.
Traditionally, large numbers of them are shaken for ceremonial dances.
They can also be played by a group of musicians, each of whom has
one instrument of differing pitch in each hand. The entire group
performs a single melody in much the same way as a handbell choir,
with each performer shaking an angklung at the appropriate time
in the melody. It is also used to accompany the kuda kepang dance
found in the Malaysian state of Johor.