Southeast Asian folk music is an umbrella for the traditional, community-rooted musics of Mainland and Island Southeast Asia, including Indonesia, Malaysia, Thailand, Cambodia, Laos, Vietnam, Myanmar, the Philippines, Brunei, Singapore, and Timor. It includes work songs, dance musics, epic recitations, ritual chant, courtly entertainment, and village festivities.
Across the region, common sonic traits include gong-chime and metallophone ensembles, cyclical/colotomic timekeeping, heterophonic textures (multiple voices ornamenting the same melody), and pentatonic and modal pitch systems (e.g., sléndro/pélog, Thai/Lao modal families, Vietnamese hơi). Instruments such as the kendang and rebana (drums), khlui and suling (flutes), khaen (mouth organ), various zithers (đàn tranh, kacapi), lutes (gambus, chapei), fiddles (rebab, đàn cò), and bamboo idiophones are central.
The repertoire serves social and spiritual functions: animist and Buddhist rituals, Islamic festivities, harvest and rice-cycle ceremonies, courtship, historical storytelling, and communal dance. While deeply local, it has absorbed centuries of influence from Indian, Chinese, and Islamic musical cultures carried by trade, migration, and religion.