When I'm Gone

Artist: Alesso - Vocal Producer: Bart Schoudel - Artist: Katy Perry - Co-Producer: Space Primates - Mixer: Serban Ghenea - Mix Engineer: John Hanes - Vocals: Katy Perry - Programming: Alesso - A&R: Jeremy Vuernick - A&R Admin: Eduardo Riberio - A&R Coordinator: Josh Gun - Mastering Engineer: Randy Merrill