The 35 Greatest R&B Artists Of All Time
http://www.billboard.com/photos/6737387/best-r-and-b-singers-of-all-time
The minute you start talking about any type of “greatest” list, the notion immediately invites loud debate. Billboard’s tally of the 35 greatest R&B artists of all time is no exception. Naysayers will no doubt quickly note the absence of Rihanna, whose impressive success is more heavily rooted in pop than R&B. And those singers whose iconic status stemmed primarily from fronting groups rather than as a solo artist were not included. Among other factors taken into consideration: game-changing influence and enduring musical legacy.
http://www.billboard.com/photos/6737387/best-r-and-b-singers-of-all-time

The minute you start talking about any type of “greatest” list, the notion immediately invites loud debate. Billboard’s tally of the 35 greatest R&B artists of all time is no exception. Naysayers will no doubt quickly note the absence of Rihanna, whose impressive success is more heavily rooted in pop than R&B. And those singers whose iconic status stemmed primarily from fronting groups rather than as a solo artist were not included. Among other factors taken into consideration: game-changing influence and enduring musical legacy.