Backing Vocals – Savan KotechaDrums, Guitar, Percussion, Programmed By – Ali PayamiEngineer – Sam HollandProducer – Ali Payami, Max MartinProgrammed By [Additional] – Max MartinWritten-By – Alexander Kronlund, Ali Payami, Demi Lovato, Max Martin, Savan Kotecha

Backing Vocals [Additional] – Livvi FrancKeyboards – Babydaddy, Jason EviganProducer – Jason EviganProducer [Additional] – BabydaddyProducer [Vocals] – Mitch AllanProgrammed By [Additional] – Isaiah Tejada, Spencer BastianWritten-By – Jason Evigan, Olivia Waithe, Scott Hoffman (2)

Arranged By [Strings], Strings – Mattias BylundBacking Vocals – Colette Falla, Demi Lovato, Johan Carlsson (4)Cello – David BukovinszkyEngineer – Noah “Mailbox” Passovoy*, Sam HollandGuitar, Keyboards, Percussion – Johan Carlsson (4)Producer – Ali Payami, Johan Carlsson (4)Producer [Vocals] – Johan Carlsson (4), Peter Carlsson (3)Programmed By – Ali PayamiViolin – Mattias JohanssonWritten-By – Dalton Grant, Johan Carlsson (4), Susan H Catanzaro*

Arranged By [Cello], Bass, Drum Programming, Engineer, Producer – Laleh PourkarimArranged By [Strings], Engineer [Assistant] – Gustaf Thorn*Backing Vocals, Piano, Written-By – Demi Lovato, Gustaf Thorn*, Laleh PourkarimCello – Eru MatsumotoSynth – Gustaf Thorn*, Laleh Pourkarim

Drums – Chris LawsEngineer – Chris Laws, Dann Pursey*Featuring – Iggy AzaleaKeyboards [All], Producer – Steve Mac (2)Written-By – Amethyst Amelia Kelly, Demi Lovato, Julia Michaels, Steve Mac (2)

Engineer [Additional] – Chris LawsFeaturing – SirahInstrumentation By [All], Producer – Jason Evigan, Steve Mac (2)Producer [Vocals] – Mitch AllanWritten-By – Demi Lovato, Jason Evigan, Julia Michaels, Sarah Mitchell (4), Steve Mac (2)

Backing Vocals – Ryan TedderEngineer [Additional And Assistant] – Daniela RiveraExecutive-Producer – Danny D*, Tim Blacksmith (3)Instruments [All] – Mikkel S. Eriksen, Tor Hermansen*Mixed By – Phil TanProducer – StarGate (2)Producer [Vocals] – Mitch AllanRecorded By – Mike Anderson (11), Mikkel S. Eriksen, Miles WalkerWritten-By – Mikkel Eriksen*, Nicole Morier, Ryan Tedder, Tor Hermansen*

Backing Vocals – Ina WroldsenDrums – Chris LawsEngineer – Chris Laws, Dann Pursey*Guitar – Paul GendlerKeyboards [All], Producer – Steve Mac (2)Written-By – Ina Wroldsen, Steve Mac (2)

Arranged By [Strings], Bass, Engineer [Assistant], Organ, Producer [Assistant] – Gustaf Thorn*Backing Vocals – Demi Lovato, Gustaf Thorn*, Laleh PourkarimDrum Programming, Effects [FX] – Laleh Pourkarim, Mag (13)Engineer, Producer, Producer [Vocals], Synth – Laleh PourkarimKeyboards – Demi Lovato, Gustaf Thorn*Written-By – Demi Lovato, Laleh Pourkarim

Backing Vocals – Demi Lovato, Gustaf Thorn*, Laleh PourkarimBass, Drum Programming, Engineer, Guitar, Percussion, Producer, Recorded By [Strings] – Laleh PourkarimEngineer [Assistant] – Gustaf Thorn*Organ, Programmed By, Synth – Gustaf Thorn*, Laleh PourkarimPiano – Demi Lovato, Gustaf Thorn*Strings – Erik ArvinderWritten-By – Demi Lovato, Laleh Pourkarim