Katy Perry is being sued by rappers claiming that her song 'Dark Horse' copied their song 'Joyful Noise'.

Listening to the track in the video above, and then Katy's song below, there is no doubt that there are similarities.

According to the St. Louis Post Dispatch:

The suit says that Perry and her co-writers infringed the copyright of the Christian song “Joyful Noise” and have exploited and profited from its use.

It also says that “Joyful Noise” has been “irreparably tarnished by its association with the witchcraft, paganism, black magic, and Illuminati imagery evoked by the same music in ‘Dark Horse’.”

“Joyful Noise” was written in 2007 and released in 2008. The song received a 2008 Gospel Music Association Dove Award nomination for the best rap/hip-hop song, the suit says.