FRIDAY: >> Baltimore’s Fertile Ground return to 9:30 Club for a concert with collaborator Raheem DeVaughn called Let’s Do It Again. Also singer Anthony David. 9 p.m., $22. >> Gallery Openings of Note: Maria Friberg opens her show, titled embedded, at Conner Contemporary, reception 6 to 8 p.m. That’s embedded #4 at left. Also we checked out a preview of Colby Caldwell’s new show, Small Game, at Hemphill Fine Arts on Wednesday, and definitely recommend…