A cover of a cover??
In all seriousness, Sean of MMvsUSAF took his copy of the virtual idol / singing synthesizer Vocaloid 2: Megurine Luka and did the only sensible thing-- made the poor Japanese robogirl spit some hard gangster raps.
Boyz n the Hood (with Megurine Luka 巡音ルカ) (cover) by Renzu / Download MP3