This is nanyin music, which literally means music or sounds from the south. It is a style of music that came from the south of China in the Fujian province. When early Southern Chinese immigrants sailed to Singapore, they brought this music along with them. They would often meet at the Thian Hock Keng Temple, where nanyin music was performed to reminisce home.
The backbone of nanyin music is its melody which is often slow and meditative, focusing on emotional expression and interpretation. The instruments involved in a nanyin piece play in heterophony, a musical texture where a single melody is played or sung simultaneously in several variations. These variations can include differences in ornamentation, rhythm or subtle changes in pitch.
In this track, the pipa plays the melody steadily, forming the backbone of the piece, while the xiao takes on a freer, flowing voice.