Clive Davis, Kelly Clarkson

Larry Busacca/WireImage

Clive Davis is only making Kelly Clarkson stronger.

On Tuesday, the American Idol winner fired back at Davis for belittling her in his new autobiography The Soundtrack of My Life. But on Wednesday, the 80-year-old music exec defended his harsh portrayal of Clarkson.

"I am truly very sorry that she has decided to take issue with what I know to be an accurate depiction of our time together," Davis tweeted. "Before the book was published, I had every fact checked with five independent individuals who were present on a daily basis throughout it all. The chapter as it is written was thoroughly verified by each and every one of them. I stand by the chapter as written in my book."

That said, Davis said Clarkson, 30, "is a tremendous vocal talent and performer" and chalks their issues up to "a few creative differences."

"At the same time I wish, and will always wish, Kelly's talent and her career to soar to ever new heights," he added.

Right. Well, kudos to Clarkson for not cowering to anyone—even Clive Davis.

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