It’s difficult to anticipate what might transpire at a stage show by Henry Rollins/Sonic Youth/Richard Kern collaborator Lydia Lunch and X vocalist/solo musician Exene Cervenka. Safe to say they’ll be in a crummy mood, but will they confront viewers with spoken-word pieces, snarl folk songs about domestic ugliness and the sorry state of the planet, or lash out in both music and verse? Find out when they perform with opener (and closer) Please at 8:30 p.m. at the Black Cat, 1831 14th St. NW. $10. (202) 667-7960. (Nathalie op de Beeck)