 Andy Duncan has been with renegades for over 20 years. And he, as much as anyone, knows the ups and downs, the years of barely hanging on that his steel band has been through. Part of it, of course, is the simple fact that pan, the steel drum, was associated with the people who first played it. The lower class, the dispossessed, even the so-called bad johns, people your parents would not want you to be hanging around with.