The Old Academy Players will host a holiday concert to support its spring production of “Ordinary Days” Saturday, Dec. 15, in the Carfax Building of Old Academy Players, 3544 Indian Queen Lane, East Falls. Doors will open at 7 p.m., and the concert will begin at 8 p.m. The concert will feature opera singer Annie Hnatko and several Philadelphia area performers singing holiday hits and Broadway classics. Local vendors will be on site selling art and gifts. Light refreshments will be served. Tickets are $15 in advance or $20 on the day of the event. Advance tickets can be purchased at oapholidayconcert.ticketleap.com.