In this book, Avi Gilboa and Laurien Hakvoort and their many co-authors use the very con-crete incident of breaking strings as a meta-phor to refer to those moments in music therapy when something goes wrong. Because many things do not go as planned in music therapy, on many levels and for many reasons. music therapists must deal with the consequences in different ways. This book examines the theory but also presents wonderfully diverse case studies from mistakes in music therapy. From experienced to beginner music therapists, various practitioners discuss cases in thirteen different countries.