Byron Simpson (born January 11, 1980), better known by his stage name Guilty Simpson is a rapper from Detroit, Michigan. He was previously known as Guilt. In order to set himself apart from the others, he added his last name to become Guilty Simpson. He is signed to Stones Throw Records. He is also known for being a favorite of the late producer J Dilla. His debut album, Ode to the Ghetto includes production from J Dilla, as well as other frequent collaborators Madlib and Black Milk. Along with Sean Price and Black Milk, Guilty Simpson formed the rap trio Random Axe. Simpson is also affiliated with the Detroit hip hop collective Almighty Dreadnaughtz. His major influences were Big Daddy Kane, N.W.A, Scarface, and Kool G Rap. He is currently working on a new album entirely produced by Katalyst of hip hop producer group Quakers.
2007: Stray Bullets (mixed by DJ Rhettmatic) (Stones Throw)
2009: Madlib Medicine Show Vol.1: Before the Verdict (Feat. Guilty Simpson) (produced by Madlib)
2010: Ghettodes (Beats by Oh No)
2010: OX to the D (With Roc C) (produced by Soul Professa)
2007: "Man's World" 12" (Prod. J Dilla)
2007: "Getting Bitches" 12" (Prod. Mr Porter) b/w "She Won't Stay At Home" (Prod. Madlib)
2008: "Ode To The Ghetto" 12" (Prod. Oh No) b/w "Home Invazion (Madlib Robbery Remix)" (Prod. Madlib)
2008 "Guilt Trip" b/w "Trusted (Lying Bitch)" Digital Single (Prod. L.G.P)
2008: "Footwork (Size 12 Version)" 7" (Prod. Madlib)
2009: "Stress" 12" (Prod. J Dilla)
2009: "Coroners Music" 12" (Prod. Madlib) b/w "OJ Simpson" (Prod. Madlib)
2009: "Acquired Taste" 7" (Prod. Metro)
2013: "Gees" 7" (Prod. Musca)
2014: "Assam" 7" (Prod. Musca)
2001
"Cut Throat" (feat. Shi-Dog) by Paradime from Vices 2002
"Dirty District Theme" (with MarvWon (billed as Guilty & Marv )) by Slum Village from Dirty District 2003
"Strapped" by Jaylib from Champion Sound "As Serious As Your Life (J Dilla Remix) " by Four Tet from As Serious As Your Life 12" 2004
"Dirtee Girlz" by Paradime from 11 Steps Down "Alert" by B.R. Gunna from Dirty District: Vol. 2
2006
"Heartbreaker" by T3 from Olio: The Mixtape "Special" (feat. Paradime) by Dabrye from Two/Three "Baby" (feat. Madlib) ; "Jungle Love" (feat. M.E.D.) by J Dilla from The Shining "Clap Your Hands" (Peanut Butter Wolf – Chrome Children )2007
"Money Motivated Movements" by Peanut Butter Wolf from Chrome Children Vol. 2 "Take Notice" by J Dilla from Ruff Draft "Nightmare" by Phat Kat from Carte Blanche "Watch Your Step" (feat. Vinnie Paz) by Percee P from Perseverance "Play Your Position" by Skyzoo from Corner Store Classic "For The D" (feat. Eric Lau) by Producer No. 1 from The Album "For The D (Harmonic 313 Remix) " (feat. Eric Lau) by Producer No. 1 from Remix EP "Supreme" (feat. Invincible) by Buff1 from Pure "Ruuude" (featuring Marv Won) by Paradime from Spill At Will "Sound The Alarm" by Black Milk from Popular Demand "Mouth Music" (feat. Busta Rhymes) by Black Milk & Bishop Lamont from Caltroit "Before I Die (Hip Hop Version)" (The Heliocentrics – Stones Throw Promo Sampler 2007 "Make It Fast"; "Mash's Revenge" (feat. MF DOOM) by Peanut Butter Wolf from 2K8 B-Ball Zombie War "Electric Gangstas" (feat. S.A., Tenacity, Shi-Dog) by Abolitionist Projects from Impossible Obstacle (Replacements)2008
"Rapcats Can't Fuck" (feat. Mr Smee) by DJ LKB & Miles Flint from Spezial Blend EP "Bad Man" feat. Scorpion by Fat Ray & Black Milk from The Set Up "Just LIKE A Man" by 88-Keys from Adam's Case Files: The Mixtape "Middle Of The Map Pt. 2" (feat. Black Milk) by Kidz In The Hall from The In Crowd "Can't Fuck With My City" by Trick-Trick from The People Vs. "Success" by Fatt Father from Fatt Father "Psycho (Guncheck)" by D3CCPT from Psycho (Guncheck) 12" "Strategies" by Shawn Jackson from First Of All... "Ferocious" by DJ Design from Jetlag "Do My Thing" (feat. Royce Da 5'9") by DJ Revolution from King Of The Decks "Oh X-Mas Tree" (feat. King Gordy & Phat Kat) by Fatt Father from Christmas With Fatt Father "Blow The Horns On 'Em"; "Go!" by Madlib from WLIB AM: King of the Wigflip "R U Listening" by Illa J from Yancey Boys "It Dont Stop"; "Unstoppable" by Dj Wich from The Golden Touch 2009
"Speed", "Damn He Outcold" by Slautah & Alius Pnukkl from A.R.E.S. (A Red Eye Smokin') 2010
"My Guitar Whales (Remix)" by Paul White from And The Purple Brain 2011
"Dirty Slang" , "Trust" by Paul White from Rapping With Paul White "Al Bundy" by Shim-E Bango from The Bridgecard EP "Maximum Karnage" by Slautah & Konphlict from He's The Producer, I'm The Emcee "My Eyes" by Moe Dirdee from Dirdee Motown 2 "Champagne Wishes & Caviar Dreams", "Detroit 101" by Ro Spit from The Glass Ceiling Project
2012
"Grime" (feat. Sean Price & Roc Marciano) by Fatt Father from Fatherhood "Crazy" & "Nails" by House Shoes from Let It Go 2013
"PRX" (feat. Alchemist) by Quelle Chris from Ghost At The Finish Line 2014
"Beef" , "(The Regiment)" by Nick Speed from Live From The Coney Island 2015
"Warning" by Denmark Vessey from Martin Lucid Dream 
