This chapter considers the Gesamtkunstwerk, which English musicologists translate as ‘total artwork’. Richard Wagner had used the expression to characterise his operas, though he had only ever used the term in two essays, both published in 1849: ‘Art and Revolution’ and ‘The Artwork of the Future’. Moreover, the term did not originate from Wagner himself, and he did not even spell it in the conventional way. Since the late twentieth century ‘Gesamtkunstwerk’ has been applied to other artforms, particularly architecture, which like opera can unite a number of elements. (Architecture, for example, marries engineering, landscaping and interior decoration, among others.) But the term's origins are in the late eighteenth-century notion that all the arts could be unified in poetry.