The trololo singing comes from Soviet singer Eduard Khil performing the wordless song I Am Very Glad, as I'm Finally Returning Home, which became a viral video in 2010 and earned him the nickname Mr. Trololo. The melody uses only vocal sounds instead of lyrics, which helped it cross languages online. Rainbow edits later added flashing color effects to match the absurd energy, turning the older performance into a brighter meme format. It remains popular because viewers recognize the tune instantly and associate it with cheerful trolling, nostalgia, and deliberately strange humor in short clips.