The Washington, D.C.-based comedy troupe The Capitol Steps will bring their blend of musical and political comedy to the Strand Theatre in Rockland on Friday, March 29, at 7:30 p.m. The Capitol Steps began over 30 years ago as a group of Senate staffers who were planning entertainment for a Christmas party. They have become an institution in D.C., providing comedy about the nation’s Capitol and more, in shows calculated to leave both sides of the political spectrum laughing. The Capitol Steps have recorded over 35 albums; their latest is “Make America Grin Again.” They’ve been featured widely on television and can be heard twice a year on National Public Radio stations nationwide during their “Politics Takes a Holiday” specials. Tickets are $50 in advance, $55 the day of the show.