The 38th annual edition of the Groton Community Christmas Choir will perform this year’s “Cantate! Laudate! Jubilate!’’ concert program at 2 and 7:30 p.m. Sunday and at 7:30 p.m. Monday in Union Congregational Church, 218 Main St. The choir, composed of children and adults from Groton and many surrounding communities, will be performing classic and nontraditional Christmas songs from around the world. The free concerts are appropriate for all ages.