A jury in Los Angeles found that Katy Perry’s 2013 popular song “Dark Horse” had copied a 2009 Christian rap song by a little-known artist. The decision came five years after Marcus Gray and two songwriters first brought legal action against Perry and her team. They said that “Dark Horse” stole from “Joyful Noise,” a song Gray released under the stage name Flame. “Dark Horse” spent four weeks atop the Billboard Hot 100 and earned a Grammy nomination for Perry. She also performed the song during her 2015 Super Bowl halftime show. The jurors found that all of the defendants, six songwriters and four companies that released the song “Dark Horse” were responsible for breaking copyright rules. A defendant is the person or company that is being accused of wrongdoing in court.