Los Angeles, California - Katy Perry is working with Dr. Luke for her comeback to the music scene, and fans aren't pleased.

The Wide Awake artist has been teasing a new era of music with a new song on the way, though she hasn't officially announced a full record yet.

Her last few albums never reached the heights of her Teenage Dream success, so working with industry heavyweights like Max Martin on KP9 is a smart move.

One old collaborator, however, has the world up in arms. Katy Perry has reportedly decided to work with the hitmaker behind California Gurls, Teenage Dream, Hot n Cold, and I Kissed a Girl, Dr. Luke.

Kim Kardashian Kim Kardashian rocks platinum basket braids – but are fans feeling it?

The music producer has been involved in a series of years-long grueling legal battles with singer Kesha after she accused him of sexual assault, among other serious allegations, in a 2014 lawsuit.

Luke later countersued Kesha for defamation, and the two parties eventually settled the cases last summer.

Now Kesha herself has seemingly weighed in on the messy situation, commenting a short contextless "lol" on X in lieu of a longer statement.

Immediately following the initial allegations against the producer, stars like Lady Gaga, Miley Cyrus, and Kelly Clarkson rushed to support Kesha and denounce Dr. Luke.

The question now is, did Katy need a smash hit so badly that she was willing to torpedo her reputation and throw a former friend under the bus?

Katy Perry's comeback track, ironically titled Woman's World, is set to drop on July 11, with the music video dropping the following day.