- Katy Perry Testifies in ‘Dark Horse’ Copyright Trial Courthouse News Service
- Katy Perry Takes the Stand on Day One of ‘Dark Horse’ Copyright Trial Billboard
- Katy Perry Expected To Testify In Copyright Infringement Trial CBS Los Angeles
- Katy Perry takes the stand in copyright lawsuit over hit ‘Dark Horse’ KABC-TV
- Opening Statements Expected in Katy Perry ‘Dark Horse’ Copyright Trial NBC Southern California
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