This chapter investigates various strands of influence, seeking to understand the role of musical ‘domestication’ in canon formation in the early nineteenth-century Viennese home. Answers are sought to fundamental questions: how the performance of music in the home influenced the creation of an authoritative list of musical ‘works’ to be championed in public; which genres were thus canonised, and how opera, which dominated ‘domesticated’ music, fared in the developing canon; and who were the ‘authorities’ and ‘publics’ in Vienna around the time of the Congress (1814–15 and just afterwards). The chapter focuses on middle-class circles, especially the salons that Leopold von Sonnleithner held and attended. Thanks to middle-class agency, repertoires were perpetuated and recreated, rethought and re-evaluated through musical arrangement and domestic performance. So in early-to-mid-nineteenth-century Vienna, concert life would develop in significant areas – repertoire, performance practices, and listeners’ behaviour, tastes, and values – all of which developed largely in the middle-class home.