Artist: 5 Seconds of Summer - Producer: Louis Schoorl - Co-Producer: Joel Chapman - Mixer: Mark Needham - Assistant Mixer: Will Brierre - Engineer: Louis Schoorl - Asst. Recording Engineer: Mitch Kenny - Asst. Recording Engineer: Eric J Dubowsky - Mastering Engineer: Andrew Edgson - Vocals: Ashton Irwin - Vocals: Calum Hood - Vocals: Michael Clifford - Vocals: Luke Hemmings