The Glen Arbor Art Association is partnering with the Sleeping Bear Dunes National Lakeshore to offer three additional summer Manitou Music Festival concerts this summer, to be held at the D.H. Day Campground amphitheater. The expanded lineup is part of the National Park Service’s 100th birthday celebration in 2016. The public, park rangers and campers are invited to join in the celebration with a concert in the park this summer and “find your park” through music.