What instruments were there in Indonesia at that time?

Judging from the decorative patterns of jade bronze drums and Dongshan shoe-shaped bronze axes, there are people from blowing sheng, people who ring four pipes like musical instruments, and people who play wind instruments such as Lusheng and Ankelong. Ankelen is a famous musical instrument of modern West Javanese. "According to Raffles in the history of Java, the Dayak people in Kalimantan often hold bird festivals when hunting to determine the whereabouts of hunting; As the hunting party advanced, it sounded like it was leading the way. Lusheng is still popular in ethnic minority areas in southwest China, and dancing is often played with the elephant foot drum. It seems that some tribes in Indonesia already have these instruments.