Mental health has become an increasingly urgent global concern, along with the rising prevalence of psychological disorders such as anxiety, chronic stress, and depression. Various therapeutic approaches have been developed to address these issues, including cognitive-behavioral therapy, humanistic psychotherapy, and integrative approaches. Music therapy—an alternative approach to psychotherapy that utilizes musical elements to enhance psychological well-being—has rapidly developed and is recognized for its effectiveness in reducing stress, alleviating anxiety, and improving mood. However, most of these interventions are still based on Western values and paradigms, often less contextual when applied in non-Western societies, including Indonesia. Music therapy used in Indonesia mainly adopts popular Western instrumental music and has not yet utilized the richness of local traditional music. In the context of Indonesian culture, keroncong music has its own distinct characteristics, marked by a slow tempo, gentle harmony, and poetic lyrics. This music is often associated with a peaceful, reflective, and melancholic atmosphere. As a cultural heritage, keroncong not only serves as entertainment but also as a medium for emotional expression and the meaning of life. With these characteristics, keroncong has the potential to be integrated into psychotherapy practices as a form of culturally based mental health intervention. Studies exploring the integration of keroncong into psychotherapy practices have not been widely conducted in Indonesia. Therefore, this research aims to understand how keroncong can be used in psychotherapy, including the opportunities it offers and the challenges faced in its implementation. This research emphasizes a qualitative approach to explore the meanings, perceptions, and direct experiences of practitioners and clients, and to provide a conceptual and practical foundation for the development of culturally relevant therapeutic interventions.