Kelly Clarkson got real emotional while belting out her reworked version of "Piece by Piece" just 12 days before her ex, Brandon Blackstock , died -- and the clip is gut-wrenching.

Check this resurfaced TikTok from Kelly’s July 26 show in Vegas -- Kelly was choking up as she intro'd the song -- saying she wrote it back when her marriage to Brandon was full of hope and dreams for the future. But now? It's had a few emotional tweaks over the years, to say the least.

Kelly revealed she’d actually changed the lyrics to the song back in '23, three years after her split from Blackstock . But after some therapy and reflection, she realized they came off a bit angry. So, she tweaked them again, making the new version feel more grown-up. Play video content

So in the updated version,

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