Producer: Josh Abraham - Artist: Katy Perry - Producer: Oligee - Additional Producer: G Koop - Remixer: Giorgio Moroder - Mix Engineer: Chris Galland - Mixer: Manny Marroquin - Assistant Mixer: Robin Florent - Assistant Mixer: Scott Desmarais - Vocals: Katy Perry - Trumpet: Dave Richards - Background Vocalist: Kamaria Anita Ousley - Saxophone: Lincoln Adler - A & R: Chris Anokute - A & R: Lauren Glucksman - Composer/Author: Anthony Criss