Singer-songwriter Rufus Wainwright, whose eclectic music has been characterized as everything from operatic pop to piano rock, performs two solo shows at the 9:30 Club this weekend. Doors open at 8 p.m. tomorrow and Saturday at the club, 815 V St. N.W., Washington. Wainwright's half-sister, Lucy Wainwright Roche, will also perform. Tickets are $35. Call 800-955-5566 or go to tickets.com.