Niall Horan - Flicker

Drums – Matt ChamberlainGuitar – Mark Goldenberg, Val McCallumGuitar, Vocals – Niall HoranWritten-By – John Ryan Written-By, Producer, Recorded By, Backing Vocals, Percussion – Julian Bunetta

Acoustic Guitar – Greg LeiszCello – Irina ChirkovaProducer, Recorded By, Arranged By [String], Acoustic Guitar, Bass, Drums, Guitar, Piano – Greg KurstinRecorded By – Alex Pasco, Julian BurgViola – Ilona GellerViolin – Anne Marie Calhoun, Leah ZegerWritten-By – Daniel Bryer, Jamie Scott, Mike Needle

Acoustic Guitar, Electric Guitar, Programmed By – Spencer ThomsonDrum Programming, Percussion – Eric DarkenDrums, Percussion – Aaron SterlingEditor [Vocal] – Kolton LeeFeaturing – Maren MorrisGuitar – Niall HoranPiano, Synthesizer – Zac RaeProducer, Recorded By, Programmed By, Conductor [Sessions] – Jacquire KingRecorded By – John RauschWritten-By – Matthew Smith Radosevich*, Ruth-Anne Cunningham

Guitar – Mark Goldenberg, Niall HoranKeyboards, Programmed By – David EmeryProducer [Additional], Programmed By – Mark "Spike" Stent*Producer [Additional], Programmed By, Synthesizer – AfterhrsWritten-By – Alexander Izquierdo, Ruth-Anne Cunningham, Tobias Jesso Jr.Written-By, Guitar – John Ryan Written-By, Producer, Recorded By, Backing Vocals – Julian Bunetta

Producer, Recorded By, Drums, Bass, Guitar, Keyboards, Piano – Greg KurstinRecorded By – Alex Pasco, Julian BurgWritten-By, Backing Vocals – Jamie Scott

Acoustic Guitar, Electric Guitar, Programmed By – Spencer ThomsonBacking Vocals – Chris StillsDrum Programming, Percussion – Eric DarkenDrums, Percussion – Aaron SterlingEdited By [Vocal] – Kolton LeeGuitar – Niall HoranPiano, Synthesizer – Zac RaeProducer, Recorded By, Programmed By, Conductor [Sessions] – Jacquire KingRecorded By – John RauschWritten-By – Iain Archer

Backing Vocals – Bridget SaraiRecorded By – Alex Pasco, Julian BurgWritten-By – Dan Wilson, Ruth-Anne CunninghamWritten-By, Producer, Recorded By, Acoustic Guitar, Bass, Drum Programming, Drums, Electric Guitar, Piano, Synthesizer – Greg Kurstin

Acoustic Guitar, Electric Guitar – Spencer ThomsonArranged By [String], Violin – Eric GorfainCello – Alisha BauerDrums, Percussion – Aaron SterlingEdited By [Vocal] – Kolton LeeGuitar – Niall HoranPiano, Synthesizer – Zac RaeProducer, Recorded By, Programmed By, Conductor [Session] – Jacquire KingRecorded By – John RauschStrings [Quartet], Viola – Leah KatzViolin, Strings [Quartet] – Daphne ChenWritten-By – John Ryan , Julian Bunetta

Guitar – Niall HoranWritten-By, Backing Vocals – Ruth-Anne CunninghamWritten-By, Backing Vocals, Bass – John Ryan Written-By, Producer, Recorded By, Backing Vocals, Drums, Piano – Julian Bunetta

Acoustic Guitar – Todd LombardoBass – Eli BeairdDrums, Piano – Ian FitchukElectric Guitar – Jedd HughesGuitar, Programmed By – Spencer ThomsonPercussion, Programmed By – Eric DarkenProducer, Recorded By, Programmed By – Jacquire KingRecorded By – John RauschWritten-By – Matthew Smith Radosevich*, Ruth-Anne Cunningham

Engineer [Additional Vocal] – Chris Bishop Engineer [Additional], Backing Vocals, Bass Guitar – Sam KlempnerGuitar – Niall HoranProducer, Recorded By – TMS Written By – Ed DrewettWritten-By, Drums, Percussion – Tom Barnes*Written-By, Handclaps, Bells – Ben KohnWritten-By, Organ – Peter Kelleher

Guitar – Niall HoranProducer, Recorded By – AfterhrsProducer, Recorded By, Programmed By, Bass, Drums, Guitar, Keyboards – Julian BunettaProgrammed By, Bass, Drums, Guitar, Keyboards – Andrew Haas, Ian FranzinoRecorded By – Martin HannahWritten-By, Backing Vocals – Mike NeedleWritten-By, Programmed By [Additional], Backing Vocals – Daniel BryerWritten-By, Recorded By, Programmed By [Additional], Backing Vocals – Jamie Scott

Acoustic Guitar, Electric Guitar, Programmed By – Spencer ThomsonArranged By [String], Violin – Eric GorfainCello – Alisha BauerDrum Programming, Percussion – Eric DarkenDrums, Percussion – Aaron SterlingEdited By [Vocal] – Kolton LeeGuitar – Niall HoranPiano, Synthesizer – Zac RaeProducer, Recorded By, Programmed By, Conductor [Sessions] – Jacquire KingRecorded By – John RauschStrings [Quartet], Viola – Leah KatzViolin – Daphne ChenWritten-By – John Ryan , Julian Bunetta