The Ayer-Shirley Regional High School concert band and concert choir, under the leadership of Matthew Burwell, music director, will perform their winter concert Wednesday, Dec. 12, at 7 p.m. in the high school auditorium. Admission is free. The band will play an eclectic mix of music, including "Pirates of the Caribbean" and "A Christmas Festival." The choir's repertoire includes "Maybe I'm Amazed" and "Hallelujah," and there will be a holiday sing-along, too. The evening will end with Ayer Shirley Youth Drama's musical retelling of "'Twas the Night Before Christmas."