Credits

Eminem: Additional Production, Mixing, Vocals
Lupe Fiasco: Vocals
T.I.: Producer, Vocals
B.o.B.: Producer, Executive Producer, Recording
Rivers Cuomo: Guitar, Vocals
Serban Ghenea: Mixing
Janelle Monáe: Vocals
The Knux: Producer
Paul Bailey: Recording
Hayley Williams: Additional Vocals
Alisha Warren: Drums
Dr. Luke: Programming, Producer, Instrumentation
John Hanes: Mixing
Luis Resto: Additional Keyboards
Manny Marroquin: Mixing
Playboy Tre: Vocals
Bruno Mars: Instrumentation, Vocals
Mike Caren: A & R Direction
Ricco Barrino: Additional Vocals
Ejyptsian Queen: Vocals
Lil' C: Producer
Chris Gehringer: Mastering
Alex Kirzhner: Design
Aniela Gottwald: Assistant Engineer
Anne Declemente: A & R Administration
Greg Magers: Recording
Jim Jonsin: Executive Producer
Josh Lopez: Additional Guitar
Shanieke Peru: Stylist
Tim Roberts: Mixing Assistant
Emily Wright: Engineer, Vocals
Sam Riback: A & R Direction
Ari Levine: Instrumentation, Mixing, Recording
Erik Madrid: Mixing Assistant
Mike Strange: Mixing, Recording
Sam Holland: Engineer
Christian Plata: Mixing Assistant
Joe Fitz: Mixing
Ariel Levine: Mixing
Juan Pablo "The Specialist" Negrete: Recording
Frank E : Co-Producer
Sydney Margetson: Publicity
Wuz Good: Photography
The Smeezingtons: Producer
Aaron Bay-Schuck: A & R Direction
Alex Schwartz : A & R Coordination
Brody Brown: Bass
Alex Da Kid: Producer
Mike Wilson: Recording
Irene Richter: Production Coordination
Adelio Lombardi: Mixing
J Browz: Additional Guitar
Megan Dennis: Production Coordination
TJ Chapman: Management
Takehiko Kato: Bass
Doug Peterson: Associate Producer
Brian Richardson: Management
Kyle King: Guitar
Kuttah: Producer