It’s been 15 years since Carrie Underwood walking into the “American Idol” auditions and her life completely changed.

On Global’s “The Late Show with Stephen Colbert” on Thursday, the country star opened up about going to the audition.

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“I didn’t know what was going to come of it. I saw the auditions on the news happening in other towns, so I thought, Why not? Worked out all right,” Underwood recalled, to which Colbert joked, “That was the shortest autobiography I’ve ever read.”

She then talked about how it almost went wrong after she got her golden ticket to Hollywood and had to get on a plane for the first time in her life.

Underwood said a mishap made her miss her connecting flight to L.A. and was worried she wouldn’t make it to the taping.

“I’m on the phone with whoever our contact person was and I was, like, ‘Please don’t kick me off the show,'” the singer said.

Luckily, she did make it there, going on to win the season and putting her on the road to stardom.

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Later on the show, Underwood performed her single “Low” from her most recent album Cry Pretty.

“The Late Show with Stephen Colbert” airs weeknights at 11:35 p.m. ET/PT on Global.