Walking on Sunshine was written by Kimberley Rew and recorded by Katrina and the Waves, first released in 1983 before becoming a major hit in 1985. Its bright tempo and simple, repeatable chorus helped it endure in films, adverts and television, long after its chart run ended. Online, short excerpts became shorthand for exaggerated happiness, with creators using the hook as a walking on sunshine meme for upbeat edits, parodies and reaction videos that need instant, recognisable joy without any setup or explanation needed from the viewer at all.