Posting ads for 48 years
Forbes magazine answers just that and in great detail with there Kings of Hip Hop.
Shawn Carter aka Jay-Z ranked number 1
Jay-Z his comeback last year with his 11th studio album â€˜Kingdom Comeâ€™ sold 2 million copies making the top of the pop and rap music charts.
Jay-Z had many other income sources like his 40/40 Club sports bar franchise.