(CNN) -- We've never known Kelly Clarkson to not say exactly what she thinks, and true to form, the singer is giving her honest opinion of Clive Davis' new memoir, "Soundtrack of My Life."
In an open letter tweeted from her official account, the singer says she has a different recollection of some events Davis reportedly includes in his book, which details his work with a wide variety of A-list artists as well as personal details, like his bisexuality.
"I just heard Clive Davis is releasing a memoir and spreading false information about me and my music," Clarkson begins, after a proper Texan greeting, in her letter posted to WhoSay on Tuesday. "I refuse to be bullied and I just have to clear up his memory lapses and misinformation for myself and for my fans. It feels like a violation. Growing up is awesome because you learn you don't have to cower to anyone -- even Clive Davis."
From there, she outlines her qualms with "Soundtrack": "First, he says I burst into 'hysterical sobbing' in his office when he demanded 'Since You Been Gone' be on my album. Not true at all. His stories and songs are mixed up," Clarkson writes, going on to explain that she wanted "more guitars added to the original demo" while Davis didn't. She won out in the end, and now "couldn't be more proud of the life of that song. I resent him dampening that song in any way."
That's not to say that she never shed tears in his office, though. It seems she became emotional after she played her song "Because of You," a track she says she wrote about her life.
"I cried because he hated it and told me verbatim that I was a 'sh***y writer who should be grateful for the gifts that he bestows upon me,'" Clarkson says. "He continued on about how the song didn't rhyme and how I should just shut up and sing. This was devastating coming from a man who I, as a young girl, considered a musical hero and was so honored to work with."
Lastly, she begs to differ on the success of her album "My December."
" 'My December' went platinum ... I am very proud of that and I have my fans to thank," she says. "But, again, what's most interesting about his story is what he leaves out: He doesn't mention how he stood up in front of his company at a convention and belittled me and my music and completely sabotaged the entire project. [The album] never had a chance to reach it's full potential."
She may sound bitter, but Clarkson assures her fans that she's happy with her career and "all of my professional relationships ... now. And I am grateful to Clive for teaching me to know the difference."
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