A2		Last Friday Night (T.G.I.F.) Coordinator [Production Coordination] – Irene Richter, Megan Dennis, Vanessa Silberman Drums, Keyboards, Programmed By – Dr. Luke, Max Martin Engineer – Emily Wright, Sam Holland Engineer [Assisted By] – Tatiana Gottwald, Tucker Bodine Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Mixed By – Serban Ghenea Producer – Dr. Luke, Max Martin Saxophone – Lenny Pickett Vocals – Katy Perry Written-By – Bonnie McKee, Katy Perry, Lukasz Gottwald, Max Martin
A3		California Gurls Coordinator [Snoop Dogg's Production Coordination] – Ted Chung Drums, Keyboards, Programmed By – Benny Blanco (3), Dr. Luke, Max Martin Engineer – Emily Wright, Sam Holland Engineer [Assisted By] – Aniela Gottwald* Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Featuring – Snoop Dogg Mixed By – Serban Ghenea Performer [Bieberaphone] – Tamra Natisin Producer – Benny Blanco (3), Dr. Luke, Max Martin Vocals – Katy Perry, Snoop Dogg Written-By – Benjamin Levin, Bonnie McKee, Brian Wilson, Calvin Broadus, Katy Perry, Lukasz Gottwald, Max Martin, Michael Love*
B1		Firework Engineer [Additional] – Carlos Oyanedel, Damien Lewis Engineer [Assisted By] – Josh Houghkirk Instruments [All] – Mikkel S. Eriksen, Sandy Vee, Tor Erik Hermansen Management [Stargate Managed By] – Danny D.*, Tim Blacksmith (3) Mixed By – Phil Tan, Sandy Vee Producer – Sandy Vee, StarGate (2) Recorded By – Mikkel S. Eriksen, Miles Walker Vocals – Katy Perry Written-By – Ester Dean, Katy Perry, Mikkel S. Eriksen, Sandy Wilhelm, Tor Erik Hermansen
B2		Peacock Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Instruments [All] – Mikkel S. Eriksen, Tor Erik Hermansen Management [Stargate Managed By] – Danny D.*, Tim Blacksmith (3) Mixed By – Serban Ghenea Producer – StarGate (2) Recorded By – Mikkel S. Eriksen, Miles Walker Vocals – Katy Perry Written-By – Ester Dean, Katy Perry, Mikkel S. Eriksen, Tor Erik Hermansen
B3		Circle The Drain Bass – Daniel Silvestri Drum Programming – Pat Thrall, C. "Tricky" Stewart* Drums [Live] – Josh Freese Effects [Special Tweaking And Electronic Breaks] – Chris "Tek" O'Ryan, Mike Green (3), C. "Tricky" Stewart* Engineer – Andrew Wuepper, Brian "B-Luv" Thomas, Chris "Tek" O'Ryan Engineer [Additional] – Pat Thrall Engineer [Assisted By] – Charles Malone, Justin Roberts (3), Kory Aaron, Luis Navarro (2), Mark Gray (5), Nicolas Essig, Randy Urbanski, Steven Dennis, Travis Harrington Engineer [Live Drums] – Steve Churchyard Guitar – Charles Malone, Daniel Silvestri, Julio Miranda Mixed By – Jaycen-Joshua* Mixed By [Assisted By] – Giancarlo Lino, Jesus Garnica Producer – C. "Tricky" Stewart* Producer [Vocals] – Kuk Harrell Sounds [Vocal Sound] – Andrew Wuepper Tracking By [Guitar], Sounds – Nick Chahwala Vocals – Katy Perry Written-By – Katy Perry, Monte Nueble, Christopher Stewart
C1		The One That Got Away Arranged By, Conductor – L. Leon Pendarvis* Coordinator [Production Coordination] – Irene Richter, Megan Dennis, Vanessa Silberman Drums, Keyboards, Programmed By – Dr. Luke, Max Martin Engineer – Emily Wright, Sam Holland Engineer [Assisted By] – Tatiana Gottwald Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Mixed By – Serban Ghenea Producer – Dr. Luke, Max Martin Vocals – Katy Perry Written-By – Katy Perry, Lukasz Gottwald, Max Martin
C2		E.T. Coordinator [Production Coordination] – Irene Richter, Megan Dennis, Vanessa Silberman Drums, Keyboards, Programmed By – Ammo (7), Dr. Luke, Max Martin Engineer – Emily Wright, Sam Holland Engineer [Assisted By] – Aniela Gottwald* Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Mixed By – Serban Ghenea Producer – Ammo (7), Dr. Luke, Max Martin Vocals – Katy Perry Written-By – Joshua Coleman, Katy Perry, Lukasz Gottwald, Max Martin
C3		Who Am I Living For? Drum Programming – Brian "B-Luv" Thomas, C. "Tricky" Stewart* Engineer – Andrew Wuepper, Brian "B-Luv" Thomas Engineer [Additional] – Pat Thrall Engineer [Assisted By] – Jason Sherwood, Luis Navarro (2), Mark Gray (5), Randy Urbanski, Steven Dennis Guitar – Brent Paschke, Michael Thompson Keyboards – Monte Neuble, C. "Tricky" Stewart* Mixed By – Jaycen-Joshua* Mixed By [Assisted By] – Giancarlo Lino, Jesus Garnica Producer – C. "Tricky" Stewart* Producer [Vocals] – Kuk Harrell Recorded By [Guitars] – Andrew Wuepper, Chris "Tek" O'Ryan Sounds [Vocal Sound] – Andrew Wuepper Vocals – Katy Perry Written-By – Brian Thomas, Katy Perry, Monte Nueble, Christopher Stewart*
D1		Pearl Drums, Synthesizer, Piano, Programmed By – Greg Wells Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Mixed By – Serban Ghenea Producer – Greg Wells Recorded By – Lewis Tozour Synthesizer, Programmed By – Fabien Waltmann Vocals – Katy Perry Written-By – Greg Wells, Katy Perry, Christopher Stewart*
D2		Hummingbird Heartbeat Bass – Michael Thompson Drum Programming – Pat Thrall, C. "Tricky" Stewart* Drums [Live] – Josh Freese Engineer – Andrew Wuepper, Brian "B-Luv" Thomas, Chris "Tek" O'Ryan Engineer [Additional] – Pat Thrall Engineer [Assisted By] – Luis Navarro (2), Nicolas Essig, Randy Urbanski, Steven Dennis Engineer [Live Drums] – Steve Churchyard Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Guitar – Brent Paschke, Michael Thompson Keyboards – Monte Neuble, C. "Tricky" Stewart* Mixed By – Serban Ghenea Producer – C. "Tricky" Stewart* Producer [Vocals] – Kuk Harrell Recorded By [Guitars] – Andrew Wuepper, Brian "B-Luv" Thomas, Chris "Tek" O'Ryan Sounds [Vocal Sound] – Andrew Wuepper Vocals – Katy Perry Written-By – Katy Perry, Monte Neuble, Stacy Barthe, Christopher Stewart*
D3		Not Like The Movies Drums, Piano, Programmed By – Greg Wells Engineer [Mix, Assisted By] – Tim Roberts Engineer [Mix] – John Hanes Mixed By – Serban Ghenea Producer – Greg Wells Recorded By – Lewis Tozour Vocals – Katy Perry Written-By – Greg Wells, Katy Perry

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