The Introduction lays out the organization and the research methodology of the book Jump Up! Caribbean Carnival Music in New York City. It outlines the history of calypso, soca, and steelband music in the diaspora, including the globalization of Trinidad Carnival, which was transplanted to Harlem in the 1930s and to Brooklyn in the late 1960s. The concept of diaspora looms large here, of course, given the historical circumstances of New York’s Afro-Caribbean migrants. The Introduction also looks at the concept of hybridity, including hybridization between African and European musical practices in the Caribbean, which is central to diasporic transnationalism in this context. Also discussed is the concept of “heritage music,” or music that is important and needs to be preserved and protected. In addition, relevant writings on Caribbean music are reviewed and the study is positioned within the broader field of transnational diasporic music scholarship. And finally, a chapter outline is offered.