The Philadelphia Folk Festival features an eclectic mix of traditional and contemporary music that stretches the boundaries of folk, helping to broaden its appeal and reach a new generation of listeners. Now in its 49th year, the festival takes place at the Old Pool Farm near Schwenksville, Pennsylvania, Aug. 20-22. A special concert, exclusively for all-festival camping ticket holders, is set for Thursday night, Aug. 19. [To read the entire article, click on the headline.]