Albums
With Main Source
1991: Breaking Atoms
Solo albums
1996: The LP (shelved, self-released in 2002, officially released in 2009)
2002: 1st Class
2008: Main Source
2012: Professor @ Large
2015: RE: Living Legend
Collaboration albums
1993: Vagina Diner (With Akinyele)
2003: Exotic's Raw (With Neek the Exotic) "Album majority, minus 6 tracks"
2008: Spiritual Intelligence (With L.E.O)
2010: Exotic Species (With Neek the Exotic) "Album majority, minus 4 tracks"
2011: Still On The Hustle (With Neek the Exotic) "Album majority, minus 5 tracks"
2014: Mega Philosophy (With Cormega)
Instrumental albums
2006: Beatz Volume 1
2007: Beatz Volume 2
Production
1990: "Let the Rhythm Hit 'Em" (Various uncredited songs on album by Eric B. & Rakim)
1990: "Intelligent Hoodlum" (Various songs on album by Intelligent Hoodlum)
1990: "Wanted: Dead or Alive" (Various songs on album by Kool G Rap & DJ Polo)
1992: "Peer Pressure" (Album Juvenile Hell by Mobb Deep)
1992: "Halftime" (Nas song from the soundtrack Zebrahead and Illmatic)
1993: "Hey Girl" (from the Apache album Apache Ain't Shit)
1993: "Keep It Rollin" (from the A Tribe Called Quest album Midnight Marauders)
1993: "Niggaz Never Learn" (from the Big Daddy Kane album Looks Like a Job For...)
1994: "Stress (Remix)" (from the Organized Konfusion 12" Stress)
1994: "One Time 4 Your Mind", "It Ain't Hard To Tell" (from the Nas album Illmatic)
1995: "Resurrection '95" Extra P Remix (from the Common 12" Resurrection)
1995: "Resurrection '95" Large Professor Remix (from the Common 12" Resurrection)
1996: "Extra Abstract Skillz" (from the Mad Skillz album From Where???)
1999: "I Sparkle" (Slick Rick from the Wild Wild West Soundtrack)
2000: "The Heist" (from the Busta Rhymes album Anarchy)
2001: "You're Da Man", "Rewind" (from the Nas album Stillmatic)
2002: "The Come Up" (from the Cormega album The True Meaning)
2002: "We Are the Future," "It's Us," and "Drug Music" (from the Non Phixion album The Future Is Now)
2004: "What They Want" (from The UN album UN Or U Out)
2006: "World Wide" (from the Boot Camp Clik album The Last Stand)
2006: "Right 2 Know" (From the Prince Po album Prettyblack)
2006: "I Be Thuggin'" b/w "Mack of the Year" (Grand Daddy IU Single)
2007: "I'm Up Now" (from the Mic Geronimo album Alive)
2008: "Conquer Mentally" Large Professor Remix (Presto album State of the Art)
2008: "The Hardest" (AZ album Undeniable)
2008: "Stages" (Reks album Grey Hairs)
2009: "No Problems" (Earatik Statik album Good, Bad & Ugly)
2009: "New Classic" (U-God album Dopium)
2009: "Same Old Drama" (Grand Puba album Retroactive)
2009: "Journey" (Cormega album Born & Raised)
2010: "Ohh" (Joell Ortiz album Free Agent")
2011: "Do The Math" (Torae album For The Record)
2011: "The Quickening" (Funkoars album "The Quickening")
2012: "Catch The Thrown" (Public Enemy album Most of My Heroes Still Don't Appear on No Stamp)
2013: "Built Pyramids" (N.O.R.E album Student Of The Game)
2013: "Acid Reflux" & "Canarsie High" (Ill Bill album The Grimy Awards)
2013: "Solar Flares" (Jeru the Damaja EP The Hammer)
2014: "MARS" (Cormega ft AZ, Redman & Styles P album Mega Philosophy by Cormega)
Vocal appearances
1990: "Money In The Bank" (Kool G Rap & DJ Polo album Wanted: Dead or Alive)
1993: "Keep It Rollin'" (A Tribe Called Quest album Midnight Marauders)
1994: "Stress (Remix)" (Organized Konfusion "Stress" 12")
1995: "Extra Abtract Skillz" (Mad Skillz album From Where???)
1996: "To Each His Own (Feat. Q-Tip)" ([InI: Pete Rock Classics]) album Center of Attention
2000: "The Last Shall Be First" (Cella Dwellas album The Last Shall Be First)
2002: "XL" (The X-Ecutioners album Built from Scratch)
2002: "Hip Hop On Wax" (Rob Swift album Sound Event)
2002: "The Come Up" (Cormega album The True Meaning)
2004: "Sugar Ray and Hearns" (Cormega album Legal Hustle)
2004: "Out Da Box" (Tony Touch album The Piece Maker 2)
2006: "United" (MF Grimm album American Hunger)
2007: "The Radar" (Marco Polo album Port Authority)
2007: "The Purist" (Polyrhythm Addicts album Break Glass)
2008: "Conquer Mentally" (Presto album State of the Art)
2009: "Fans" (Masta Ace & Edo G album Arts & Entertainment)
2009: "Sweet 16s" (Satchel Page album Young Patriarch)
2009: "Like This" (No Sellout: Ground Original 2(album))
2011: "Beats By The Pound" (Soulbrotha The Connexion EP)
2011: "The Quickening" (Funkoars)
2012: "Forever" (Gensu Dean) album (Standard Life)
2012: "Loco-Motive" (Nas album Life Is Good)
2012: "Catch the Thrown" (Public Enemy album Most of My Heroes Still Don't Appear on No Stamp)
2012: "Back & 4th Scrambler" (Yu Mamiya)7 Inch Single
2013: "Built Pyramids" (N.O.R.E. album (P.A.P.I.))
2013: "Astonishing" (Marco Polo album (P.A.2 The Directors Cut))
2014: "Naturally Born" (with Big Noyd & Kool G Rap)