Huh? Last 20 years mean 1998-2018. R Kelly released r album in 98, tp2 in 2000, chocolate factory in 2003. Wtf r u talking about? R Kelly ran the 90s and 2000s not usherDid you not see the last 20 years part?
Chris Brown is a bootleg version of Usher.
Why would I bring up R Kelly?