Join the Concord Chorus, now in its 74th season, for a heavenly selection of music and carols for the holiday season. Kevin Leong conducts the 100-voice Concord Chorus on Saturday, December 14, 2019, at 2:00 PM and 5:00 PM at the Middlesex School’s Memorial Chapel in Concord, Massachusetts. The program spans six centuries of choral music, including works by Byrd, Bach, Mendelssohn, Fauré, and René Clausen. The concert also features organist Jonathan Wessler, violinist Christine Binzel, and pianist John Sullivan.…