Producer: Duke Dumont - Artist: Katy Perry - Featuring: Nicki Minaj - Additional Producer: PJ “Promnite” Sledge - Engineer: Noah "Mailbox" Passovoy - Engineer: Rachael Findlen - Asst. Recording Engineer: Zeke Mishanec - Additional Producer: Noah "Mailbox" Passovoy - Mixer: Serban Ghenea - Mix Engineer: John Hanes - Vocals: Katy Perry - Synthesizer: Duke Dumont - Drums: Duke Dumont - Programming: Duke Dumont - Keyboards: PJ “Promnite” Sledge - Engineer: Aubry "Big Juice" Delaine - Recording Engineer: Aubry "Big Juice" Delaine - Asst. Recording Engineer: Iain Findlay - A&R: Lauren Glucksman - Remixer: Valentino Khan