When we look at our historical past, we see that various communities have applied to music as an art form to express the emotions that are the strongest part of our selves. The preference of music as a form of expression of religious feelings is another situation we encounter. While musical practices stand out in the religions of Judaism, Christianity and in the religious traditions of various groups (Syriac, Greek, Armenian, Presbyterian), the five-time call to prayer in Islam and Turkey, tasbihat sung in a melodious tone during the pilgrimage and Umrah, the sema rites of the Mevlevi order, music and are examples of intertwined forms of religion in daily life. According to Tolstoy, “Art is neither pleasure nor consolation nor entertainment; Art is a sublime business. Art is the organ that transfers conscious knowledge to emotions in human life. The effects of religious music, intertwined with psychology, on human psychology, both as a carrier of collective religious values and providing the opportunity for religious experience, are intriguing. Therefore, considering the intertwined relationship between religion and psychology, the subject of a long-term music therapy study of religious music is one of the qualities that makes this study unique.

In this study; The history of the development of music therapy both in Europe and Turkey, approaches and models used in music therapy, music therapy methods and application principles are covered in detail. In the light of current research findings in the literature, the effects and usage areas of music therapy are examined. In addition to presenting extensive information on the subject of music therapy, the relationship between music therapy and religion, and current research on music therapy with religious content, made in the world and in Turkey, is another feature that makes this study unique.