Trackboyz are a hip-hop producing duo consisting of Mark "Tar Boy" Williams and Joe "Capo" Kent. Among the hits they have engineered include Nelly's "Air Force Ones" (#3 on the Billboard Hot 100), D12's 40 Oz. and J-Kwon's "Tipsy" (#2). The Trackboyz signed with Def Jam Records and have also worked with, among other hip-hop artists, Ebony Eyez and Nappy Roots.