Earlier this week, Kesha filed a lawsuit against Dr. Luke, alleging that her former producer sexually abused her and manipulated her with drugs for over a decade.
Luke countersued Kesha, claiming that the suit was part of an extortion effort coordinated by the pop star's management team and her mother, Pebe Sebel.
Today, a flood of new information about the case has gone public.
First, emails from Kesha's mother to Luke's lawyers detailing more horrific details about the alleged crimes were obtained by TMZ.
Now, a source has come forward claiming that Kesha "spontaneously" opened up about Luke's assaults during group therapy sessions when she was in rehab earlier this year.