Gesamtkunstwerk is a German term attributed to the German opera composer Richard Wagner which refers to an operatic performance which encompasses music, theater, and the visual arts.

Wagner placed great importance on "mood setting" elements, such as a darkened theater, sound effects, and seating arrangements which focused the attention of audience on the stage, completely immersing them in the imaginary world of the opera. These concepts were revolutionary at the time, but they have since come to be taken for granted in the modern operatic environment.