Cappella Cantorum Masterworks Chorus begins its 50th anniversary year with the performance of Parts 1, 2 and 3 of Bach's Christmas Oratorio on Sunday, Dec. 15, 3 p.m. at Valley Regional High School located at 256 Kelsey Hill Rd, in Deep River, CT 06417. Professional soloists and orchestra will join the chorus. Simon Holt of the Salt Marsh Opera and First Congregational Church of Old Lyme will direct. Celebrate the holiday season by attending this Baroque masterpiece by Bach. Tickets are $30 from Cappella members or online until December 8; $35 at the door. For more information or to purchase tickets, please visit www.CappellaCantorum.org.