Answer:
a. Agung
Explanation:
The agung is a set of two wide-rimmed, vertically suspended gongs
Gabbang, also known as bamboo xylophone, is a musical instrument made of bamboo widely used in the southern Philippines.
Seronggagandi is a decorated bamboo tube, closed by a node at both ends.
A suling or Seruling is an Indonesian bamboo ring flute
