Blackstock, who died Aug. 7 at age 48, split from Clarkson in 2020 after seven years of marriage.

“I’m really trying to pull it together,” Clarkson said, wiping back tears during a performance that was caught on video.

Brandon Blackstock, Kelly Clarkson's ex-husband, died of melanoma, a coroner confirmed. He died Aug. 7 at 48.