  The rapid development of musical AI technologies has expanded the creative
potential of various musical activities, ranging from music style
transformation to music generation. However, little research has investigated
how musical AIs can support music therapists, who urgently need new technology
support. This study used a mixed method, including semi-structured interviews
and a participatory design approach. By collaborating with music therapists, we
explored design opportunities for musical AIs in music therapy. We presented
the co-design outcomes involving the integration of musical AIs into a music
therapy process, which was developed from a theoretical framework rooted in
emotion-focused therapy. After that, we concluded the benefits and concerns
surrounding music AIs from the perspective of music therapists. Based on our
findings, we discussed the opportunities and design implications for applying
musical AIs to music therapy. Our work offers valuable insights for developing
human-AI collaborative music systems in therapy involving complex procedures
and specific requirements.
