The concert will begin at 6:30 p.m., with concessions opening at 5:30 p.m., on the Addison Hall lawn, 7400 Augusta Street, River Forest. In the event of rain, the concert will be held in Werner Auditorium. Free. Costs for ice cream, boxed dinners and water range from $1 to $5. Concertgoers encouraged to bring blankets and/or lawn chairs.