Tis the season of excellent holiday events. Here’s one of the best: The incomparable CoroAllegro will perform “Heaven and Nature Sing!” as a way to bring the Christmas story to life. Through music old and new, the chorus will celebrate the joy of humanity by exploring the connections between this world and the realm of angels—and it could do so at no more heavenly a place than the historic Immanuel on the Green Episcopal Church in Old New Castle. The concert is Dec. 1. Or see it Dec. 4 at Aldersgate United Methodist Church in Wilmington. (658-6915, coroallegro.com)