The archipelago of Indonesia holds one of the world’s richest, most geographically dispersed arrays of sonic traditions, with distinct communities across its more than 17,000 islands cultivating unique approaches to sound, structure, and creative expression that have evolved alongside centuries of cultural exchange, internal migration, and cross-community collaboration. This diversity has created a need for cataloguing frameworks that can hold sounds that do not fit within narrow, rigid genre boundaries, leading to the intentional creation of the Music/Mix classification, a category reserved for works that draw from multiple disparate sonic lineages to build something that resists placement in any single, established genre group.