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Composer
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Lukasz Gottwald
Max Martin
Katy Perry
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Composer
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Drums
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Dr. Luke
Benny Blanco
Steven Wolf
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Performer
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Primary Artist
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Katy Perry
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Main Performer
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Bass
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Dr. Luke
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Performer
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Lyricist
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Lukasz Gottwald
Max Martin
Katy Perry
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Composer
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Guitar
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Dr. Luke
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Performer
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Performer
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Katy Perry
Benny Blanco
Steven Wolf
Dr. Luke
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Performer
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Engineer
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Nick Banns
Tatiana Gottwald
Emily Wright
Tina Kennedy
Sam Holland
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Production
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Vocals
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Katy Perry
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Performer
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Mastering Engineer
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Chris Bellman
Brian "big Bass" Gardner
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Production
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Mixing
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John Hanes
Serban Ghenea
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Production
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Mixing Assistant
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Tim Roberts
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Production
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Producer
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Dr. Luke
Benny Blanco
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Production
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Production Coordination
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Gary Silver
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Production
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Programmer
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Dr. Luke
Benny Blanco
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Production
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Remixing
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Innerpartysystem
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Production
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Studio Personnel
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Tina Kennedy
Chris Bellman
Brian "big Bass" Gardner
Serban Ghenea
Gary Silver
Emily Wright
John Hanes
Tim Roberts
Innerpartysystem
Sam Holland
Nick Banns
Tatiana Gottwald
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Production
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Composer Lyricist
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Max Martin
Lukasz Gottwald
Katy Perry
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Other