What is "kacapi"

Kacapi is a zither-like Sundanese musical instrument played as the main accompanying instrument in the Tembang Sunda or Mamaos Cianjuran, kacapi suling ( tembang Sunda without vocal accompaniment) genre (called kecapi seruling in Indonesian), pantun stories recitation or an additional instrument in Gamelan Degung performance.

Word kacapi in Sundanese also refers to santol tree, from which initially the wood is believed to be used for building the zither instrument.