Question: Which Finnish hip hop group that was active between 1998 and 2005 sang  "Freestyler" 
Sentence (from "Bomfunk MC's"): The group's front man was the Finnish rapper B.O. Dubb (born Raymond Ebanks, and formerly known as "B.O.W."), and the main producer was Jaakko "JS16" Salovaara.
Relevant evidence: No