This document provides an overview of the traditional music styles of several Southeast Asian countries, including Indonesia, Malaysia, Singapore, Vietnam, Thailand, Cambodia, Myanmar, and Laos. It describes some of the most prominent musical instruments, scales, and ensemble types used in each country's traditional music, noting influences from Indian, Chinese, and other neighboring cultural traditions. Specific genres mentioned include gamelan music from Indonesia, pinpeat orchestras from Cambodia, and piphat ensembles from Thailand.