- Katy Perry Testifies in ‘Dark Horse’ Copyright Lawsuit PEOPLE.com
- Katy Perry Takes the Stand on Day One of ‘Dark Horse’ Copyright Trial Billboard
- Katy Perry Testifies in ‘Dark Horse’ Copyright Trial Variety
- Katy Perry Expected To Testify In Copyright Infringement Trial CBS Los Angeles
- Katy Perry testifies in court for ‘Dark Horse’ copyright trial UPI News
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