Natalie Maines, Martie Seidel and Emily Robison have taken the Texas-bred sound of a fiddle, banjo, dobro and crystal-clear vocal harmonies into whole new territory. They are the rare act that comes along a few times in a generation that is destined to shake things up, rewrite the rules and become the new musical trendsetters. The public has certainly noticed. The Chicks' first Monument album Wide Open Spaces has become the biggest selling album ever by a country duo or group - racking up some 6 million sales by the time their second album, Fly, was completed. The tremendous sales only demonstrates that while The Chicks have established themselves as a true country music act, they have also won over audiences outside the country genre.