Sarah Martini is closing in on the end of her term as "Rock Girl," an annual promotion/contest that 102.9 FM "The Hog" promotes heavily on its station and at area events. Casting calls for the new Rock Girl begin April 23 from 8-10 p.m. at Whiskey Bar, and run through May 6. Then, fans can vote through the station's Web site or through Time Warner Cable On Demand. In June, it gets serious, with finalist events leading up to the crowning of a new Rock Girl on June 25.