Music accompanies us throughout our entire lives. We all know the positive or negative associations that music can evoke within us. Music affects our limbic system, which governs learning behavior, memory, and emotions. Music therapy is a therapeutic profession that requires advanced training. It utilizes biochemical and neurological connections to influence physical and, above all, emotional reactions through the targeted use of music, improve existing abilities, and develop new competencies. Music therapy is suitable for all individuals with physical or emotional disorders that impair their quality of life or freedom of expression. It is applied across all age groups: from premature infants to the dying. In this guide, the author summarizes her decades of experience.