This document provides information on the music of Mindanao, the second largest island of the Philippines. It discusses the ethnic groups of Mindanao and their characteristics. It then describes various types of traditional musical instruments used in Mindanao, grouping them into chordophones (string instruments), aerophones (wind instruments), idiophones (percussion instruments), and membranophones (drum instruments). Specific examples are given for each group with descriptions of their construction and cultural significance. The document aims to convey the musical diversity and traditions that have developed among the different peoples of Mindanao.