This chapter explores how migrants have contributed to the evolution of music in London. Despite episodes of xenophobia in the London musical scene, xenophilia became stronger, partly driven by the fact that both music and musicians inevitably migrate. This is so that, while national traditions of music may emerge, the process of cultural transfer involving both sound and people mean that such traditions cannot remain sealed off from external influences, even if they may develop national-level identities, at least in the short run. While music and musicians crossed European boundaries, during the twentieth century both performers and their tunes have increasingly spanned global and consequently racial divides. The German assertion that nineteenth-century Britain constituted a ‘Land ohne Musik’ (land without music), while an exaggeration, partly explains the arrival of foreign musicians to Victorian London and the eras before and since. The constant settlement and visits by musicians to the British capital since the early eighteenth century meant that London did not become a city without music, even if the tunes and those who played them often originated from abroad.