The sound comes from the original Trololo song performed by Soviet singer Eduard Khil, whose 1976 televised performance of the wordless vocalise became a viral meme around 2010. Fans remixed the cheerful tune into faster, looped and themed versions, and the rainbow edit pairs it with bright color effects for maximum silliness. Trololo remains popular because the melody needs no lyrics or context, works in any language, and instantly signals a troll or joke moment in edits, streams and gaming videos online today.