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Composer
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Joshua Coleman
Katy Perry
Lukasz Gottwald
Max Martin
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Composer
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Drums
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Max Martin
Dr. Luke
Ammo
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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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Keyboard
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Dr. Luke
Max Martin
Ammo
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Performer
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Performer
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Katy Perry
Johnson Somerset
Dr. Luke
Ammo
Max Martin
John Monkman
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Performer
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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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Kevin Bartley
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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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Max Martin
Ammo
Dr. Luke
John Monkman
Johnson Somerset
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Production
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Production Coordination
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Megan Dennis
Vanessa Silberman
Irene Richter
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Production
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Programmer
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Ammo
Max Martin
Dr. Luke
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Production
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Recording
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Sam Holland
Emily Wright
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Production
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Recording Assistant
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Aniela Gottwald
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Production
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Remixing
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John Monkman
Johnson Somerset
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Production
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Studio Personnel
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Megan Dennis
Kevin Bartley
Johnson Somerset
Irene Richter
Aniela Gottwald
Serban Ghenea
Sam Holland
Emily Wright
Vanessa Silberman
John Hanes
Tim Roberts
John Monkman
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Production