This volume provides a transnational study of the impact of musical cultures in the Eastern Baltics—Lithuania, Latvia, Poland, and Russia—at the end of the Cold War and in the early post-Communist period. Throughout the book, the contributors explore and conceptualize transnational musical collaboration and the diffusion of information, people, and ideas focusing on musical activity which shaped the moral and artistic outlook of several generations. The volume sheds light on the transformative power of politically and socially engaged music and offers a deeper understanding of the artistic potential of societies and its impact on social and political change.