The new CMT show Gone Country is attempting to pull off one of the biggest makeovers in reality-TV history: turning Marcia Brady into a full-fledged cow-chip-kickin' country music star. And The Brady Bunch's Maureen McCormick is only one of seven way-out-of-their-element celebs (including Bobby Brown and Twisted Sister singer Dee Snider) to take up the challenge of trying to write and perform a bona fide country hit in just 10 days; the winner will have his or her song produced by the show's host, Big & Rich's John Rich. So what advice did the Nashville vet give the aspiring country crooners? "I told them, 'Country music is about your life,'" says Rich. "You just have to be real."