Question: What pseudonym does American rapper and singer, featured on the album 2012 from duo 1982, use as a record producer?
Sentence (from "T.I. discography"): He has also served as a ghostwriter and assisting songwriter, for several artists, such as Bow Wow, Sean "Diddy" Combs, Dr. Dre, Bun B and Keyshia Cole.
Relevant evidence: No