Tank might not be a superstar, but as a rare and unwavering proponent of gospel- and soul-rooted commercial R&B, the singer, songwriter, and producer has stood out since his debut at the turn of the 21st century. Contrary to his reputation as a niche artist, Tank has hit the Top Ten of the Billboard 200 with Force of Nature (his 2001 debut), the Grammy-nominated Sex Love & Pain (2007), and This Is How I Feel (2012), and achieved the feat a fourth time with Three Kings (2013), as one-third of TGT beside peers Tyrese and Ginuwine. He's a longtime favorite of urban adult contempo...