I can defiintly tell u its not your 1st time hearing his work.
* Network Repz - "Dos Collabos (Hip Hop's Delight)" ft. Bahamadia & ACG Live!
* Black Star - "Thieves In The Night" - Mos Def and Talib Kweli Are Black Star
* Mos Def - "Love" - Black On Both Sides [gold]
* Mos Def - "Speed Law" - Black On Both Sides [gold]
* Mos Def - "May-December" - Black On Both Sides [gold]
* Mos Def - "Champion Requiem" - The New Danger
* Talib Kweli - "Right About Now" - Right About Now: The Official Sucka Free Mix CD
* The Pharcyde - "Choices" - Humboldt Beginnings
* The Pharcyde - "The Uh Huh" - Humboldt Beginnings
* Beanie Sigel - "Watch Your Bitches" - The Reason
* Foxy Brown - "That Dude, That Chick" featuring Mos Def - ?
* 3LW - "High Fashion (Be Yourself)" - A Girl Can Mack
* Musiq - "Babygirl" - Juslisen [platinum]
* Musiq - "Juslisen: Intermission" - Juslisen [platinum]
* Musiq - "Dontstop" featuring Bilal - Soulstar [gold]
* Musiq - "Her" - Soulstar [gold]
* J-Live - "Got What It Takes" - The Best Part
* J-Live - "Don't Play" - The Best Part
* J-Live - "Play" - The Best Part
* Schoolz of Thought - "Perpetual Motion" - From Thought To Finish
* Schoolz of Thought - "eVERYthHINGSaLLrIGHT (rIGHTnOW)" - From Thought To Finish
* Schoolz of Thought - "It'z Going Down, Now (Feel Good)" - From Thought To Finish
* Consequence - "Rock-N-Roll (remix)" - A Tribe Called Quence: 1995 - 2004
* Consequence - "Doctor, Doctor" - Take 'Em To The Cleaners
* Consequence - "Train" - Take 'Em To The Cleaners
* Consequence - "The Hulk" featuring John Legend - Take 'Em To The Cleaners
* Hip Hop For Respect - "A Tree Never Grown" featuring A.L. Skillz, Fre, Kofi Taha, Rubix, Invincible, Wordsworth, Tame One, Jane Doe, J-Live, Grafh & Mos Def - Hip Hop For Respect
* DJ Spinna - "The Scott Steinway Trio (Montreaux '76)" - The Beat Suite
* Macy Gray - "Why Didn't You Call Me?" (remix) featuring Grafh - How Life Is
* Grafh - "Keeps It Gangsta" - Keeps It Gangsta 12"
* Grafh - "Gimme That" - Keeps It Gangsta 12"
* Lyricist Lounge - "Bi-Sexual" featuring Jane Doe - Underground Airplay Version 1.0
* Lyricist Lounge - "Intro" featuring De La Soul - Lyricist Lounge Vol. 1
* Lyricist Lounge - "Bathroom Cipha" featuring J-Treds, Kwest, Thirstin Howl III, I.G. Off & Hazadous - Lyricist Lounge Vol. 1
* Joe Budden - "Cold World" featuring Musiq - ?