Artist: 5 Seconds of Summer - Vocals: Luke Hemmings - Guitar: Luke Hemmings - Guitar: Michael Clifford - Vocals: Calum Hood - Bass Guitar: Calum Hood - Vocals: Ashton Irwin - Vocals: Michael Clifford - Drums: Ashton Irwin - Producer: John Feldmann - Recording Engineer: John Feldmann - Mixer: Eric Valentine - Engineer: Zakk Cervini - Engineer: Matt Pauling - Programmer: Zakk Cervini - Programmer: Matt Pauling - Additional Producer: Zakk Cervini - Additional Producer: Matt Pauling - Editor: Zakk Cervini - Editor: Matt Pauling - Asst. Recording Engineer: Allie Snow - Asst. Recording Engineer: Luke Shrestha - Assistant Mixer: Cian Riordan - Assistant Mixer: Justin Long - Mastering Engineer: Eric Valentine