Mariah Carey, who has a white mother and African-American father, released her first album, "Mariah Carey", in 1990. It reached number one in the United States. Since then she has sold over 200 million albums, singles and videos. This makes her one of the best selling artists ever. Mary J. Blige released her first album, "What's the 411?", in 1992. It combined hip hop and soul. People gave her the name "Queen of Hip Hop Soul" due to this. It sold 3.4 million copies. "Billboard" ranked her as the most successful female R&B artist of the last 25 years.