This chapter documents the prehistory of drum kit performance practice and the invention of the trap drummer’s outfit. First, it examines the impact of the transatlantic slave trade on American musical culture. Second, it explores the history of the snare drum, bass drum, and cymbals, and how they come together in ensemble performance. Third, it discusses the emergence of highbrow and lowbrow culture and the consequences for the status of drummers. Fourth, it discusses the types of music that a drummer was likely to play working in nineteenth-century USA. Fifth, it examines the tinkerers, inventors, and entrepreneurs who developed the key components of the early drum kit, known in its time as the ‘trap drummer’s outfit’.