– engineer Chris Carmouche – engineer Andrew Coleman – engineer DJ Flexx – audio production, engineer producer, rapping Nate Dogg – primary artist, rapping 8Ball and MJG – guest artist, rapping Emperor Searcy – executive producer Fat Joe – primary artist, rapping Gary Fly – assistant engineer, mixing assistant John Frye – engineer, mixing Gangsta Boo – primary artist, rapping Abel Garibaldi – engineer Stephen Georgiafandis – engineer Bo Hagon – primary artist Ice Cube – guest artist, rapping Jazze Pha – guest artist, rapping LaMarquis Mark Jefferson – bass R. Kelly – guest vocals L-Roc – Keyboards Jason Lader – engineer, mixing Bryan Leach – executive producer Jonathan Lewis – producer Craig Love – guitar Lil Bo – rapping Lil Scrappy – primary artist, rapping Craig Love – guitar Ludacris – guest artist rapping Rob McDowell – executive producer Ian Mereness – engineer MHG – primary artist Nas – rapping The Neptunes – audio production, producer Oobie – primary artist Vince Phillips – executive producer Pimpin' Ken – performer, primary artist Rick Rubin – producer Andrew Scheps – mixing Paolo Sheehy – engineer Jonathon "Lil Jon" Smith – executive producer, mixing, producer Snoop Dogg – guest artist, rapping Scott Storch – keyboards, Chris Steinmetz – engineer Suga Free – primary artist Brian Sumner – engineer T.I. – primary artist, rapping Trillville – primary artist Usher – guest artist, vocals Mark Vinten – engineer Benjamin Wheelock – design Pharrell Williams – guest artist, vocals Ying Yang Twins – guest artist, rapping Wassim Zreik – engineer Danny Zook – sample clearance Charts Weekly charts Year-end charts Certifications References 2004 albums Lil Jon & the East Side Boyz albums Albums produced by Lil Jon Albums produced by the Neptunes Albums produced by Rick Rubin