Every day people come together to make music. Whether amateur or professional, young or old, jazz enthusiasts or rock stars, what is common to all of these musical groups is the potential to create communities of musical practice (CoMP). Such communities are created through practices: ways of engaging, rules, membership, roles, identities and learning that is both shared through collective musical endeavour and situated within certain sociocultural contexts. Ailbhe Kenny investigates CoMP as a rich model for community engagement, musical participation and transformation in music education. This book is the first to produce a valid and reliable in-depth study of music communities using a community of practice (CoP) framework - in this case focusing on the social process of musical learning. Employing case study research within Ireland, three illustrations from particular sociocultural, genre-specific, economic and geographical contexts are examined: an adult amateur jazz ensemble, a youth choir, and an online Irish traditional music web platform. Each case is analysed as a distinct community and phenomenon offering sharpened understandings of each sub-culture with specific findings presented for each community.