Together in music develops insight into the musical ensemble as an intense form of teamwork, as finely coordinated joint action, and as an emotionally and socially rewarding experience that enables positive outcomes for wellbeing and development. By investigating processes related to group music-making at meso-, micro-, and macro-level, it offers a platform for synthesis across disciplinary and methodological approaches, and the definition of a new level of understanding that is holistic and considers interrelationships between levels of analysis. The book combines review chapters that summarize the state of the art with case studies that present research outcomes. While most chapters focus on Western classical or contemporary music, the themes that run through the book have broad relevance, which include the role of embodiment and emergence, relationships between the social and the musical, multi-dimensionality of experiences, and technologies to investigate and support collaboration and interaction in ensembles.