In "The Artwork of the Future" (1849), he described a vision of opera as Gesamtkunstwerk ("total work of art"), in which the various arts such as music, song, dance, poetry, visual arts and stagecraft were unified.
En Das Kunstwerk der Zukunft (1849), describiu unha visión da ópera como Gesamtkunstwerk ('obra de arte total'), na que varias artes como a música, a canción, a danza, a poesía, as artes visuais e escénicas uníanse.