- Producer
- Grand Wizzards, Kelo Saunders, ?uestlove, The Roots, Scratch (Hip-Hop), Slimkid3, John “L.A. Jay” Barnes, Melvin “Chaos” Lewis, Rahzel, The Ummah, Black Thought
- Recording Engineer
- David Ivory, Otto Capobianco, Rafael Lipscomb, Paul Smith, Melvin “Chaos” Lewis, Hans Gutknecht, Gordon Rice, Kelo Saunders, Paul Smith (Engineer), Vince Kershner, Chris Trevett, Martin Czembor, Bob Power
- Mixing Engineer
- Bob Power, ?uestlove, Richard Nichols, Kelo Saunders, Black Thought, Melvin “Chaos” Lewis, Ken “Duro” Ifill, Tim Donovan
- Mastering Engineer
- Tom Coyne
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