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The sound comes from Soviet singer Eduard Khil performing a wordless vocalise written by Arkady Ostrovsky, often known in English as I Am Very Glad to Finally Be Home. A television performance circulated online around 2009 and 2010, where Khil's wide smile and trolololo refrain turned him into Mr. Trololo. The clip spread across forums and video sites as the soundtrack for trolling, Rickroll style bait and playful mockery, and short loops of the hook remain a staple meme reaction.
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The short famous Trololo vocal riff from Eduard Khil's wordless Soviet song, used as a classic trolling and meme reaction sound in videos and group chats.
This clip is the looping trolololo vocal hook sung in a bright, cheerful baritone with no actual words, just rolling la and lo syllables over a light orchestral backing. The melody bounces up and down in a way that feels smug and deliberately annoying, which is exactly why it works. Played after a prank, a failed attempt or an obvious bait, it turns the moment into a joke at the victim's expense. The humour comes from how happy the singing sounds compared with the frustration it is meant to tease.
