Lighten up.LISTENDirections: John GerrardWhat: The environmental photographer and installation artist discusses his work in the exhibit.Why: Digitally manipulated pics of oil derricks and lonely farms make for new landscapes.When: Thurs., 7 p.m.Where: Hirshhorn Museum and Sculpture Garden, Independence Ave. SW, at 7th St. (202-633-1000).JAMU Street Music Hall OpensWhat: Christen the new venue with a performance by Bluebrain to celebrate the release of the band’s latest, Soft Power. Why: DJs Empath and Molly Siegel spin.When: Thurs., 9 p.m.Where: 1115 U St. NW, b/t 11th & 12th Sts. Tickets online at ticketalternative.com.SEEThe Light in the PiazzaWhat: Molly Smith directs a chamber music version of the beloved musical.Why: So many awards, so little time.When: Thru Apr. 11. Where: Arena Stage in Crystal City, 1800 S. Bell St., Arlington (202-488-3300). Tickets online at arenastage.org.DRINKDickson Wine BarWhat: The new bar pours biodynamic wines and organic spirits and serves food by Marvin’s James Claudio.Why: The cozy space has big ideas, communal wood tables, and a warm atmosphere.When: Sun.-Thurs., 6 p.m.-2 a.m.; Fri. & Sat., 6 p.m.-3 a.m.Where: 903 U St. NW, b/t 9th St. & Vermont Ave. (202-332-1779).The Mayflower Renaissance Hotel Anniversary CocktailsWhat: Toast its 85th with a Lady GaGa (sparkling wine, cognac, Lillet, lemon juice) or First Lady (vodka, grapefruit juice, Lillet, grenadine) in the Town & Country lounge.Why: The $5 snacks.When: Thru Apr. 1. Daily, 5 p.m.-midnight. Where: 1127 Connecticut Ave. NW, b/t L & M Sts. (202-347-3000).Art: John Gerrard / Courtesy of the Hirshhorn Museum and Sculpture Garden It’s a good weekend for an old-fashioned house party. And we have a slew of party planning ideas to help you pull it off.