used with permission of Kendall Walton.
Angklungs, or tuned bamboo slide rattles, have been used throughout Indonesia, Malaysia and Thailand. Generally, these rattles have two or three vertical bamboo tubes (tuned in octaves) attached to a handheld horizontal bamboo rod. When you shake them, the tubes slide along grooves cut into the rectangular frame and strike a bamboo or wooden rim. There is a small segment cut out of each tube which also affects the pitch they produce.
Usually, performers use pairs of anklung, one held in each hand. Occasionally, these instruments are suspended so that musicians can play two or more at a time.