Dr. Luke

See what Katy had to say.

A judge ruled the singer defamed her producer in a text message to Lady Gaga.

Lady Gaga defended Kesha against Dr. Luke's lawyer in an unsealed deposition.

The pop star reportedly promoted the bottled water in videos and online partly out of fear of co-owner Dr. Luke.

More, Dr. Luke's team claims Kesha's management conspired to 'ruin' him.

Her lawyer reportedly filed an emergency motion to keep her testimony sealed.

Kesha's legal team is firing back at Dr. Luke, saying a major record label CEO was the one who said Dr. Luke allegedly raped Katy Perry.

Gaga and Perry had previously — and mysteriously — gotten sucked into the case in early 2017.

P!nk says she's explicitly denied chances to work with the hit-maker over the years.

"I was like, 'I don't want my name near his. I want to pretend this didn't happen in my life,'" she recalled.