The melody comes from Let It Go, the breakout song from Disney's Frozen, originally performed by Idina Menzel as Elsa. A short, exaggerated rendition by YouTube creator JonTron later circulated on soundboards and in meme edits, where its theatrical delivery made it easy to reuse out of context. Because the tune is instantly recognisable and the performance is deliberately overblown, creators keep returning to it for ironic sing-along moments, reaction clips and comedic failure montages rather than for a faithful musical cover.