Pittsburgh Camerata will present a “A Celtic Christmas Carol” concert of Christmas music from Scotland, Ireland and Wales in December. Concerts are scheduled at 8 p.m. Friday at St. Andrew’s Episcopal Church, 5801 Hampton St.; at 3 p.m. Sunday at Sixth Presbyterian Church, 1688 Murray Ave.; and at 8 p.m. Dec. 19 at Mount Lebanon Lutheran Church, 975 Washington Road. General admission tickets are $20 in advance or $25 at the door; full-time students pay $5. Call 412-421-5884 or visit www.pittsburghcamerata.org.