Bass – Mickey MaddenDrums, Percussion – Matt FlynnEngineer – Noah PassovoyEngineer [Assistant Engineer For Mix] – Tim RobertsEngineer [Assistant] – Eric EylandsEngineer [Engineer For Mix] – John HanesKeyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaProducer, Instruments, Backing Vocals, Programmed By, Drums [Additional], Guitar [Additional], Bass [Additional], Keyboards [Additional] – Shellback Recorded By [Vocals] – Max Martin, Shellback Vocals – Adam LevineWritten-By – Adam Levine, Benjamin Levin, Shellback

Bass – Mickey MaddenDrums, Percussion – Ammo , Cirkut, Dr. Luke, Matt FlynnEngineer – Clint Gibbs, Doug McKean, Jonathan Sher, Noah PassovoyEngineer [Assistant] – Cameron Montgomery, Eric Eylands, John Armstrong, Rachael FindlenEngineer [Engineer For Mix] – John HanesGuitar – Dr. Luke, James Valentine Instruments, Programmed By – Ammo , Cirkut, Dr. Luke, Maroon 5Keyboards – Ammo , Cirkut, Dr. Luke, Jesse Carmichael, PJ MortonMixed By – Serban GheneaPercussion [Core] – CirkutProducer – Ammo , CirkutSynthesizer [Synth Bass] – Dr. LukeTechnician [Instrument Technician] – Artie SmithVocals – Adam LevineVocals [Additional] – Mike Posner Written-By – Adam Levine, Henry Walter, Jacob Kasher Hindlen, Joshua Coleman, Lukasz Gottwald, Mike Posner

Bass – Mickey MaddenCoordinator [Production Coordination] – Andrew "McMuffin" Luftman, David "Dsilb" Silberstein, Jeremy "Jboogs" Levin, Seif "Mageef" HussainDrums, Percussion – Matt FlynnEngineer – Chris "Anger Management" Sclafani, Matthew Tryba, Noah PassovoyEngineer [Assistant Engineer For Mix] – Phil SeafordEngineer [Assistant] – Bradford H. Smith, Eric EylandsEngineer [Engineer For Mix] – John HanesKeyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaProducer [Additional] – Noah PassovoyProducer, Instruments, Programmed By – Benny Blanco , Noel Zancanella, Ryan TedderVocals – Adam LevineVocals [Additional], Handclaps – Jason Fields, Sam Schamberg, Shawn Tellez, Travis LeeteWritten-By – Adam Levine, Ammar Malik, Benjamin Levin, Noel Zancanella, Ryan Tedder

Bass – Mickey MaddenCoordinator [Production Coordination] – Noah PassovoyDrums, Percussion – Matt FlynnEngineer – Noah PassovoyEngineer [Assistant] – Eric Eylands, Eric WeaverEngineer [Engineer For Mix] – John HanesKeyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaProducer [Additional Vocal Production] – Isaiah TejadaProducer [Vocals] – Jason Evigan, Sam Martin , Stefan JohnsonProducer, Instruments, Programmed By – Jason Evigan, The Monsters & StrangerzVocals – Adam LevineWritten-By – Adam Levine, Jason Evigan, Jordan Johnson , Marcus Lomax, Sam Martin , Stefan Johnson

Backing Vocals – Ashley Cahill, Jesse Carmichael, Johan Carlsson , Ross Golan, Ryan Jackson-Healy, Sam FarrarBass – Mickey MaddenDrums, Percussion – Matt FlynnEngineer – Noah PassovoyEngineer [Assistant] – Eric EylandsKeyboards – Jesse Carmichael, Johan Carlsson , PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaProducer [Vocals] – Johan Carlsson , Noah PassovoyProducer, Instruments, Programmed By, Engineer [Engineer For Mix] – Johan Carlsson Programmed By [Additional] – Max Martin, Shellback Strings – Mattias BylundVocals – Adam LevineWritten-By – Adam Levine, Johan Carlsson , Ross Golan

Backing Vocals – Aryn WüthrichBass – Mickey MaddenCoordinator [Coordination Production] – Andrew "McMuffin" Luftman, Seif "Mageef" HussainDrums, Percussion – Matt FlynnEngineer – Chris "Anger Management" Sclafani, Mikkel Eriksen, Noah PassovoyEngineer [Assistant Engineer For Mix] – Phil SeafordEngineer [Assistant] – Bradford H. Smith, Eric EylandsEngineer [Engineer For Mix] – John HanesExecutive-Producer – Danny D, Tim Blacksmith Instruments, Programmed By – Benny Blanco , Noah Passovoy, StarGate Keyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaProducer – Benny Blanco , StarGate Producer [Additional] – Noah PassovoyVocals – Adam LevineWritten-By – Adam Levine, Ammar Malik, Benjamin Levin, Mikkel Storleer Eriksen, Nate Ruess, Tor Erik Hermansen

Bass – Mickey MaddenDrums, Percussion – Matt FlynnEngineer – Noah PassovoyEngineer [Assistant Engineer For Mix] – Phil SeafordEngineer [Assistant] – Eric EylandsEngineer [Engineer For Mix] – John HanesKeyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaPerformer [Gammeldansk Drunk] – Mailbox, Shellback Producer, Instruments [Additional], Programmed By [Additional] – Astma & Rocwell, Shellback Vocals – Adam LevineWritten-By – Adam Levine, M.Flygare, Shellback , T.Jimson

Bass – Mickey MaddenDrums, Percussion – Matt FlynnEngineer [Assistant] – Eric EylandsEngineer [Engineer For Mix] – John HanesEngineer, Coordinator [Production Coordination] – Noah PassovoyKeyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaProducer [Additional Vocal Production] – Isaiah TejadaProducer [Vocals] – Jason Evigan, Sam Martin , Stefan JohnsonProducer, Instruments, Programmed By – Jason Evigan, The Monsters & StrangerzVocals – Adam LevineWritten-By – Adam Levine, Jason Evigan, Jordan Johnson , Marcus Lomax, Sam Martin , Stefan Johnson

Bass – Mickey MaddenDrums, Percussion – Matt FlynnEngineer – Noah PassovoyEngineer [Assistant] – Eric EylandsKeyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaProducer, Instruments, Programmed By – Noel Zancanella, Ryan TedderVocals – Adam LevineWritten-By – Adam Levine, Noel Zancanella, Ryan Tedder

Backing Vocals – Shellback Bass – Mickey MaddenDrums, Percussion – Matt FlynnEngineer – Noah PassovoyEngineer [Assistant Engineer For Mix] – Phil SeafordEngineer [Assistant] – Eric EylandsEngineer [Engineer For Mix] – John HanesKeyboards – Jesse Carmichael, PJ MortonLead Guitar – James Valentine Mixed By – Serban GheneaOther [Chartreuse Drunk] – EveryoneProducer, Instruments [Additional], Programmed By [Additional] – OzGo, Shellback Vocals – Adam Levine, Adam LevineWritten-By – Adam Levine, Oscar Görres, Shellback

Coordinator [Production Coordination] – Andrew "McMuffin" Luftman, Seif "Mageef" HussainEngineer – Chris "Anger Management" Sclafani, Noah PassovoyEngineer [Assistant Engineer For Mix] – Phil SeafordEngineer [Assistant] – Bradford H. Smith, Eric EylandsEngineer [Engineer For Mix] – John HanesFeaturing – Gwen StefaniInstruments, Programmed By – Benny Blanco Keyboards – PJ MortonMixed By – Serban GheneaProducer – Adam Levine, Andre Lindal, Benny Blanco , Rodney "Darkchild" JerkinsStrings – Phil PetersonVocals – Adam Levine, Gwen StefaniWritten-By – Adam Levine, Andre Lindal, Benjamin Levin, Rodney Jerkins, Sia Furler