Question: The singer who contributed vocals to the track "You Know What It Is" was a member of what hip hop group?
Sentence (from "Mr. J. Medeiros"): As well as releasing music under the name, Mr. J. Medeiros, he is responsible for forming the Hip Hop group The Procussions, is one half of the Hip Hop/Electronic duo AllttA, and the lead singer of Punk-Rap group KNIVES.
Relevant evidence: No