Artist: Dr. Dre - Producer: Listen2KÖACH - Producer: Dr. Dre - Artist: Eminem - Recording Engineer: Lola A. Romero - Recording Engineer: Fredwreck - Recording Engineer: Julio Ulloa - Recording Engineer: Mike Strange - Recording Engineer: Tony Campana - Asst. Recording Engineer: Jeremy Zumo Kollie - Asst. Recording Engineer: Jeffery “Champ” Massey - Mixer: Dr. Dre - Mastering Engineer: Brian "Big Bass" Gardner - Additional Vocals: Marsha Ambrosius - Trumpet: Chris Lowery - Trombone: Chris Johnson - Saxophone: Jerry “Jay Flat” Williams - Additional Keyboards: Luis Resto - Composer/Author: A. Young