The prevention of violence is one of the major social responsibilities of the 21st century, which requires effective preventative measures on many levels. Music as a non-verbal and emotive medium provides specific and effective means for promoting aggression regulation, the ability to resolve conflicts, and social integration.This book presents an innovative approach to the prevention of violence through music, examined empirically for the first time in a pilot study at two secondary schools. Assumptions formulated in focused hypotheses are evaluated in a quasi-experimental research design – which includes two project and two control classes of 5th grade – and potential impacts are verified. The discussion of the results analyzes conditions for positive project implementation, taking into account qualitative research methods, and establishes conceptual conclusions. For the purposes of applied music therapy research, the book documents the empirical analysis of the impact of a music therapy project model and shows key steps of scientifically based concept development for the prevention of violence through music.