DAVID GREENE, HOST:
Good morning. I'm David Greene.
(SOUNDBITE OF SONG, "DARK HORSE")
KATY PERRY: (Singing) Mark my words, this love will make you levitate.
GREENE: This really takes you back to the summer of 2014, doesn't it? Well, a jury here in LA found that Katy Perry's "Dark Horse" copied this song.
(SOUNDBITE OF SONG, "JOYFUL NOISE")
FLAME: (Singing) Your boy's been a Christian - how long? - quite a few years. Yes.
GREENE: That is "Joyful Noise" by the Christian rapper Flame. Perry and her co-defendants say they had never heard of it, but the unanimous verdict said it was a perfect storm of copyright infringement.
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