Book excerpt: Relating the innovative ways in which assistants and collaborators can become an integral part of a course of music therapy, this book explores how the involvement of a diverse range of individuals, such as family members, learning support assistants, caregivers and medical staff, can contribute to successful sessions. Illustrated by clinical examples, the book will help music therapists and students to make the most of opportunities to collaborate with individuals other than the client who may be present during therapy sessions. The book also takes into account the challenges that can arise in music therapy collaboration, and explores the relationships that can develop between music therapists, clients and collaborators.