Gospel Rapper Says Katy Perry Plagiarized Part of 'Dark Horse'

Katy Perry is expected to testify in the trial that began Wednesday.

Did Katy Perry plagiarize the beat of her 2013 hit "Dark Horse”?

That's what gospel rapper Marcus Gray is claiming, saying the beat was nicked from his song "Joyful Noise."

Now, Gray, who goes by the name "Flame,” is suing Perry for copyright infringement.

Perry’s attorneys insist she's never heard the 2008 song "Joyful Noise" before, but the song has millions of views on YouTube and was even nominated for a Grammy.

It's not the first high-profile case of its kind.

In 2018, a judge ordered Robin Thicke and Pharrell Williams to pay $5 million to the family of Marvin Gaye in a copyright infringement suit involving their single, “Blurred Lines,” which sounded similar to Gaye’s “Got to Give it Up.”