The tune behind this clip is Ievan Polkka, a traditional Finnish polka that long predates the internet. It reached a worldwide audience in the mid-2000s when the Finnish group Loituma's lively vocal version was paired online with an animated Hatsune Miku spinning a spring onion, a loop that became known as the leek spin meme. That pairing turned a folk melody into shorthand for cheerful, slightly absurd energy. Violin covers like this one keep the joke alive by stripping it back to the melody alone, letting listeners recognise it instantly without any lyrics.