Johann Strauss II was a 19th century Austrian composer known as the Waltz King, and his light orchestral waltzes became shorthand for Viennese ballrooms in film and television. Short excerpts circulated online as reaction music for moments that need instant class or ironic grandeur, similar to how the Imperial March is used for a villain entrance. The Strauss name alone now signals elegance to many viewers, even without a specific piece being named, which is why editors keep reusing the sound for parodies of wealth, manners and ceremony.