The Lancaster Symphony Orchestra has added a performance of "The Magic of John Williams" to its schedule. The concert will be presented on Friday and Saturday, Dec. 29 and 30, at 2:30 and 7:30 p.m. each day. All performances will take place at the Gardner Theatre within Lancaster Country Day School, 725 Hamilton Road, Lancaster.

To purchase tickets, visit http://www.lancastersymphony.org.