Bobby De Pace isn't riding around in limousines or eating in fine restaurants like other recording artists. But that doesn't bother De Pace, a burly baritone who is championing the cause of American workers through his newly released CD entitled "Unionized." De Pace, 57, is a Northwest Airlines baggage handler by day and a musician by night. Until he lost a reelection bid last year, De Pace was the top-ranking union official for Northwest's largest union, which represented 13,000 ground workers. In 2006, he was at the bargaining table when labor and management negotiators agreed to 11.5 percent pay cuts for his union's members. Now De Pace has come roaring back in a new arena -- music.