Katy Perry – Smile = 微笑

Producer – Dreamlab
Producer – Zedd
Written-By – Dagny Norvoll Sandvik
Written-By – Gino Barletta
Written-By – Leah Haywood
Written-By – Hayley Warner
Written-By – Michelle Buzz
Written-By – Daniel James
Written-By – Katy Perry
Written-By – Anton Zaslavski
Written-By – Jason Gill

Producer, Programmed By, Drums, Bass, Keyboards – Oscar Holter
Written-By – Oscar Holter
Written-By – Noonie Bao
Written-By – Katy Perry
Written-By – Sasha Sloan

Producer, Programmed By, Drums, Bass, Keyboards, Percussion – Oscar Görres
Producer, Programmed By, Drums, Bass, Keyboards, Percussion – Andrew Goldstein
Written-By – Madison Love
Written-By – Michael Pollack (5)
Written-By – Katy Perry
Written-By – Andrew Goldstein
Written-By – Jacob Kasher Hindlin

Producer – The Monsters & Strangerz
Written-By – Michael Pollack (5)
Written-By – Stefan Johnson
Written-By – Jon Bellion
Written-By – Jordan Johnson (2)
Written-By – Katy Perry
Written-By – Jacob Kasher Hindlin

Producer – StarGate (2)
Written-By – Katy Perry
Written-By – Tor Erik Hermansen
Written-By – Mikkel S. Eriksen
Written-By – Ferras Alqaisi

Producer, Keyboards, Programmed By – Oscar Görres
Producer, Keyboards, Programmed By – Andrew Goldstein
Written-By – Madison Love
Written-By – Michael Pollack (5)
Written-By – Katy Perry
Written-By – Andrew Goldstein
Written-By – Jacob Kasher Hindlin

Producer – Oligee
Producer – Josh Abraham
Written-By – Anthony Shawn Criss
Written-By – Brittany Hazzard
Written-By – Kier Gist
Written-By – Josh Abraham
Written-By – Benny Golson
Written-By – Vincent Brown (2)
Written-By – Oliver Goldstein
Written-By – Katy Perry
Written-By – Ferras Alqaisi

Producer – John Ryan (17)
Producer – Johan Carlsson (4)
Written-By – John Ryan (17)
Written-By – Johan Carlsson (4)
Written-By – Ian Kirkpatrick
Written-By – Katy Perry
Written-By – Jacob Kasher Hindlin

Producer – John Ryan (17)
Producer – Johan Carlsson (4)
Written-By – John Ryan (17)
Written-By – Johan Carlsson (4)
Written-By – Katy Perry
Written-By – Ferras Alqaisi
Written-By – Jacob Kasher Hindlin

Producer – Johan Carlsson (4)
Producer – Charlie Puth
Written-By – Johan Carlsson (4)
Written-By – Charlie Puth
Written-By – Katy Perry
Written-By – Jacob Kasher Hindlin

Producer [Additional Production], Backing Vocals – Sophie Frances Cooke
Producer [Vocals] – John DeBold
Producer [Vocals] – Svend Lerche
Producer, Engineer, Drum Programming, Guitar, Synth, Programmed By [Synth], Programmed By [String], Arranged By [String], Effects [Vocal Chops] – John DeBold
Written-By – Andrew Jackson (17)
Written-By – Katy Perry
Written-By – Sophie Frances Cooke

Co-producer, Programmed By, Organ, Bass, Drums, Backing Vocals – Elvira Anderfjärd
Producer [Vocals] – Johan Carlsson (4)
Producer [Vocals] – Peter Carlsson (3)
Producer, Programmed By, Acoustic Guitar, Shaker, Synthesizer – Johan Carlsson (4)
Written-By – John Ryan (17)
Written-By – Johan Carlsson (4)
Written-By – Sarah Hudson
Written-By – Katy Perry
Written-By – Jacob Kasher Hindlin