In order to address a number of gaps in the literature regarding music-making and Dissociative Identity Disorder (DID), the current investigation explored the nature of a complex Polyfragmented DID through a compositional and self-reflective cyclical research design. The overarching aim of this research was to break the conspiracy of silence surrounding childhood sexual abuse through an innovative musical approach in which a number of research questions were investigated, including how different dissociated parts1 express themselves musically, whether compositional research can promote greater understanding of the nature of DID parts and/or change their relationship with each other, and whether this approach results in structural or other changes in my DID system. Through a self-reflective, cyclical and practice-based approach, which began with a literature review and planning, followed by part-driven music-making, self-reflection and analysis, amendments and extensions, and final musical modifications and self-reflection, the research produced 14 original scores, along with a phenomenological analysis of each piece. The original compositions and accompanying texts make significant contributions to the literature on the understanding and treatment of DID and to musical research and compositional methods. The musical portfolio will also be a significant contribution to the repertoire of Australian and female composers.