By J.D. Reed
He may be billed as the "superstar of tomorrow," but Texas singer Clint Black, 27, is already hotter than three-alarm chili. His debut single A Better Man topped the charts; his country-pop album Killin' Time went No. 1; and last week the Country Music Association dubbed him most promising newcomer. The affable Black, whose cowboy appeal has women flocking to his concerts, seems amazed. "Me, a superstar?" he asks. The former steelworker from Houston says he spent "countless nights playing in honky-tonk dives." But, he recalls, "they listened to the music."