Music education is undergoing a global transformation, with increasing emphasis on flexible, culturally rooted, and community-engaged pedagogies. Project-Based Learning (PBL) offers powerful opportunities to position learners as active co-creators of meaningful musical experiences. These approaches support flexible, personalized learning, enabling students to connect more deeply with their interests within music-based environments. However, a significant gap remains in literature, as case-based academic documentation of these approaches is still limited, particularly across diverse educational and cultural contexts. Cases on Project-Based Learning in Music Education offers rich, real-world case studies that demonstrate how PBL is applied across diverse music education contexts. This book explores learning journeys in formal classroom settings, conservatories, community music centers, hybrid digital environments, and informal learning spaces. Covering topics such as civic engagement, cross-cultural musicology, and elderly choir networks, this book is an excellent academic resource for graduate and doctoral students, vocal and instrumental instructors, music teacher educators, curriculum developers, community arts practitioners, policymakers, and more.