R. Kelly had 12 solo studio albums by 2019 .
In 2002 and 2004 , Kelly released collaboration albums with rapper Jay-Z and has been a featured vocalist for other hip hop artists including Nas , Sean Combs , and The Notorious B.I.G..As of 2019 , Kelly has released 12 solo studio albums , and sold over 75 million records worldwide , making him the most successful R & B male artist of the 1990s and one of the world 's best-selling music artists .
R. Kelly