Ievan Polkka by Hatsune Miku but it's the original Finnish lyrics by Loituma instead of gibberish
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This is my original arrangement of Ievan Polkka by Loituma using Hatsune Miku, substantially based off the Loituma version (https://www.youtube.com/watch?v=1...

This is funny, but also genuinely superior in terms of lyrical texture. Maybe that seems like it’d be obvious, but I would have thought that if you have the freedom of absolute gibberish you’d be able to optimize that.

On the other hand, it’s leekspin and I’m overanalyzing.