Book excerpt: This book addresses an existing gap in academic arts-based research, whereby, rather than exploring music as an effective therapeutic intervention, it is explored as the central medium or tool of inquiry. Integrating heuristic, hermeneutic, and arts-based grounded theory methodologies, the book conceptualizes and describes the practice of Sonic Stretching as an in-depth example of using sound as an effective and systematic research tool. Stemming from evidence-based insights, the book explores and explains ways in which music and sound can be utilized in arts-based research (ABR) in all disciplines, as opposed to only being used among professional musicians and those operating within music studies. It points to some of the obstacles that have previously prevented this from happening more broadly and, in doing so, aims to help bridge the conspicuous gap in ABR studies, where music and sonic imagination should be. Offering a clear and well-presented example for integrating music and sound into processes of depth psychological inquiry and addressing the impact of colonialization upon embodied knowledge in music and academic research, it will appeal to scholars and researchers working at the intersection of psychology, music studies, education, social justice, and research methods.