Cozart, better known by his stage name Chief Keef, is an American rapper, singer, and producer. Rap music’s’mumble rap’ and ‘drill’ subgenres were popularised by Chief Keef. When he was a high school student on Chicago’s South Side, he was adored by many of his peers. Chief Keef has been a guest of the state … Continue reading Who is Chief Keef? Bio, Early Life, Career, Net Worth & More Detail!