The singer who contributed vocals to the track "You Know What It Is" was a member of what hip hop group?
You Know What It Is: "You Know What It Is" is a song by American hip hop recording artist T.I., released July 10, 2007, as the second single from his fifth studio album "T.I. vs. T.I.P." (2007). Wyclef Jean:  He first achieved fame as a member of the New Jersey hip hop group the Fugees.
i don't know