This document discusses the global history and spread of music over time. It describes how music has diffused and blended across cultures through imperialism, migration, and technological advances. Key developments include the standardization of music notation in the Middle Ages, the rise of orchestras and operas in the Baroque period, the blending of styles through slavery and cultural exchange, and the modern globalization of music through recordings, radio, and digital technologies. Recent trends show a shift away from US dominance with the rise of K-pop and artists adapting music to local contexts.