Artist: 5 Seconds of Summer - Producer: Oscar Gorres - Programmer: Oscar Gorres - Guitar: Michael Gordon Clifford - Bass Guitar: Calum Hood - Drums: Ashton Irwin - Vocals: Calum Hood - Background Vocalist: Oscar Gorres - Background Vocalist: Geoff Warbuton - Mixer: Mike "Spike" Stent - Assistant Mixer: Matt Wolach - Mastering Engineer: Dave Kutch - Background Vocalist: Ashton Irwin - Background Vocalist: Calum Hood - Background Vocalist: Michael Gordon Clifford - Background Vocalist: Luke Hemmings