John Cullum (center) stars as Urinetown's Caldwell, the political boss of the drought-starved town, who urges those around him to "Don't Be the Bunny." Flanking him are ensemble members Megan Lawrence and Spencer Kayden. The three put Urinetown's score to CD May 15 for a release July 10 on the RCA label. Urinetown is the neo-Brectian tale of a town, not unlike our own, where one must pay to pee. A hit Off-Broadway, Urinetown will be the first musical of the Broadway season when it re-opens at the Henry Miller Theatre in late July.