The Andover Senior Community Friends group is sponsoring a holiday ball at the historic Town House on Main Street. This festive evening is scheduled to take place from 6 to 10 p.m. Saturday and will feature musical entertainment by D.B.’s Orchestra. Black tie is optional. Cost: $25 per couple; $15 for singles. Tickets are available at the Andover Senior Center, 36 Bartlett St., and the Andover Bookstore, 89R Main St. Proceeds will help support the senior center. For more information, call 978-623-8321.