This sound comes from Eduard Khil's 1976 Soviet television performance of the vocal piece often nicknamed the Trololo song. Decades later, the clip spread widely online after being rediscovered and shared on early social platforms and video sites, where Khil's grin and wordless vocals became a meme. It remains popular because the melody is instantly recognizable, the performance is visually unforgettable, and the nonsense vocals fit reaction edits, surreal humor and throwback meme compilations.