This collection of previously published articles, chapters and keynotes traces both the theoretical contribution of Lucy Green to the emergent field of the sociology of music education, and her radicalhands-on practical work in classrooms and instrumental studios. The selection contains a mixture of material, from essays that have appeared in major journals and books, to some harder-to-find publications. It spans issues from musical meaning, ideology, identity and gender in relation to music education, to changes and challenges in music curricula and pedagogy, and includes Green's highly influential work on bringing informal learning into formal music education settings. A newly-written introduction considers the relationship between theory and practice, and situates each essay in relation to some of the major influences, within and beyond the field of music education, which affected Green's own intellectual journey from the 1970s to the present day.