


Luke, Drums, Keyboards, Programmed By: Max Martin, Engineer : Tatiana Gottwald, Engineer : Tucker Bodine, Engineer : Tim Roberts, Saxophone: Lenny Pickett, Written-By: Bonnie McKee, Written-By: Katy Perry, Written-By: Lukasz Gottwald, Written-By: Max Martin, Coordinator : Ted Chung, Drums, Keyboards, Programmed By: Benny Blanco (3), Drums, Keyboards, Programmed By: Dr. Luke, Drums, Keyboards, Programmed By: Max Martin, Engineer : Tatiana Gottwald, Engineer : Tucker Bodine, Engineer : Tim Roberts, Written-By: Benjamin Levin, Written-By: Bonnie McKee, Written-By: Katy Perry, Written-By: Lukasz Gottwald, Written-By: Max Martin, Coordinator : Irene Richter, Coordinator : Megan Dennis, Coordinator : Vanessa Silberman, Drums, Keyboards, Programmed By: Dr. Eriksen, Recorded By: Miles Walker, Vocals: Katy Perry, Coordinator : Irene Richter, Coordinator : Megan Dennis, Coordinator : Vanessa Silberman, Drums, Keyboards, Programmed By: Benny Blanco (3), Drums, Keyboards, Programmed By: Dr. Eriksen, Producer: Miles Walker, Producer: Sandy Vee, Producer: StarGate (2), Promotion : Bob Semanovich, Recorded By: Lewis Tozour, Recorded By: Mikkel S. Luke, Producer: Greg Wells, Producer: Max Martin, Producer: Mikkel S.

Luke, Executive-Producer: Max Martin, Mastered By: Brian Gardner, Mixed By: Jaycen Joshua, Mixed By: Phil Tan, Mixed By: Sandy Vee, Mixed By: Serban Ghenea, Painting, Photography By: Will Cotton, Producer: Ammo (7), Producer: Benny Blanco (3), Producer: Christopher Stewart, Producer: Dr. A&R: Chris Anokute, A&R : Robert Stevenson (3), A&R : Liz Isik, A&R : Ronette Bowie, Art Direction: Jo Ratcliffe, Coordinator : Ngoc Hoang, Creative Director: Angelica Cob-Baehler, Design: An Art Service, Engineer: Andrew Wuepper, Engineer: Brian "B-Luv" Thomas, Engineer: Carlos Oyanedel, Engineer: Chris "Tek" O'Ryan, Engineer: Damien Lewis, Engineer: Emily Wright, Engineer: Pat Thrall, Engineer: Sam Holland, Engineer : John Hanes, Executive-Producer: Dr.
