The title "Research and Development" was chosen for the first issue of the "Jahrbuch Musiktherapie", a motto that will never lose its relevance. In this yearbook, contributions are published that deal with the respective topic or individual aspects of it from different perspectives or through different theoretical approaches. In each issue, abstracts of current dissertations and similar scientific work are also published to give an overview of the state of research on music therapy. In addition, there are reviews that round off the music therapy picture and the yearbook.