A comprehensive textbook on theory, practice, and research into the Bonny Method of GIM and its applications with individuals and groups of all ages with various needs. Models of practice of GIM are presented within Jungian, psychodynamic, Gestalt, cognitive and transpersonal orientations, and advancements to GIM are detailed (e.g., new music programs, and methods of analysing music programs). Theory and research on GIM are examined, and the book closes with a discussion of professional issues such as technology, ethics, supervision, and self care. The Appendices provide a comprehensive list all music programs developed by Bonny Method practitioners.