NASHVILLE, Tenn (Reuters) - If he hadn't known better, Lionel Richie jokes that he might have felt insulted when initially sitting down with some of today's top country stars to record his new album of duets, "Tuskegee." "I pulled out the lyrics to the songs, and they were like, 'what's that?' "I said, 'here are the lyrics.'" Richie says with a mock look of astonishment, then smiles. "They said, 'Oh no, man. I know this. I've been singing it since 1983 or 1987,'. Someone even said, 'I've been singing these songs since I was in elementary school. ...