The careers of singer Nancy Wilson and pianist Ramsey Lewis have followed parallel lines since the early 1960s. Although both began as jazz artists, they soon found greater fame and fortune in contemporary pop and have rarely looked back since. In 1982, Mr. Lewis and Ms. Wilson teamed up for a vapid, forgettable collection of smooth jazz/contemporary pop called The Two of Us. For jazz fans, the record represented all the wrong turns taken by these two obviously talented musicians.