What did Robert Sylvester Kelly, known professionally as R. Kelly, do before he was an American singer, songwriter, and record producer?
ATL (band):  They had enlisted R. Kelly to produce their debut album "The ATL Project", released in July 2004. R. Kelly: Robert Sylvester Kelly (born January 8, 1967), known professionally as R. Kelly, is an American singer, songwriter, record producer, and former professional basketball player. R. Kelly:  Kelly became the first musician to play professional basketball, when he was signed in 1997.
former professional basketball player.