The melody comes from Soviet singer Eduard Khil's wordless vocal performance of a song about returning home, recorded in the 1970s. Decades later, a television clip of Khil singing the cheerful, lyric-free tune spread online in 2010 and became known worldwide as Trololo. Its lack of understandable words helped it cross language barriers, while Khil's expressive delivery made it easy to reuse as a reaction. It remains popular because the tune is instantly recognisable, upbeat and flexible enough to fit both nostalgic tributes and modern comedy edits.