Artist: 5 Seconds of Summer - Producer: Linus - Mixer: Mark "Spike" Stent - Vocals: Luke Hemmings - Guitar: Luke Hemmings - Vocals: Michael Clifford - Guitar: Michael Clifford - Vocals: Calum Hood - Bass (Vocal): Calum Hood - Vocals: Ashton Irwin - Drums: Ashton Irwin - Percussion: Ashton Irwin - Bells: Nicole Tafralian - Mastering Engineer: Chris Gehringer