His note-worthy attack on Kesha

KESHA’S FORMER producer used a sleazy trick out of Bill O’Reilly’s playbook — releasing personal notes — to show he didn’t sexually harass her, her lawyer says.

The pop singer is battling exproducer Dr. Luke, whose real name is Lukasz Gottwald, over what he claims was an “orchestrated press strategy and public campaign to brand Gottwald a rapist (falsely) in order to coerce him to ‘settle.’”

In new court papers, Kesha’s attorney said his client needed a PR strategy because Luke (photo) stooped as low as the ex-Fox News host .

“Consistent with Bill O’Reilly’s recent strategy of releasing Megyn Kelly’s old thank-you notes to rebut her sexual-harassment complaints, Dr. Luke attached to his complaint a birthday card signed ‘Ke$ha’ thanking Dr. Luke for ‘making my wildest dreams come true,’” Pearl wrote.