Etymologically, angklung was taken from the word ‘angka’, which means tone and ‘lung’, which means broken.
So, angklung refers to the broken tone or incomplete tone.
Angklung is an instrument made of bamboo tubes attached to a bamboo frame. The use of angklung is swayed and shaken by hand to produce a note. This instrument has been played for centuries in Indonesia, especially in West Java, Central Java, East Java, and Bali. The word ‘Angklung’ was originated from Sundanese “angkleung-angkleungan”, which means the movement of angklung player and the sound “klung” that comes from the instrument. (http://www.angklung-udjo.co.id)