This study investigates mental health experts' conception on music therapy using a phenomenological approach. This study analyses the conception of music therapy of 6 psychiatrists, 12 nurses, 4 social workers, 3 psychologists aiming to explore the role of music therapy in the field of psychiatry and to suggest the future direction of music therapy. As the 'Protocol Analysis' Colaizzi's phenomenological method was used for data collection and analyzation. Meaningful statements, central conceptions, themes were collected and categorized through interviews with the mental health experts. As a result, it was found that mental health experts conceived music therapy in the same line with psychotherapy in that art therapy programs benefit patients in psychological and social areas as they improve emotion release and elevation, relationship formation and maintenance, expression, self-esteem, concentration/ persistency and tension relaxation. Further, team approach has been found to be suggestive and effect verification is necessary for the future of music therapy. key words: music therapy, protocol analysis, phenomenological method.