The Radio City Christmas Spectacular is an annual show that is held at New York City's Radio City Music Hall. The show is held during the Christmas season. It is seen by more than a million visitors a year. The show uses over 140 performers, lavish costumes and an original musical score. It presents a combination of special effects, music and dance during various acts. Much of the dancing is done by the dance group known as the Rockettes. The show runs for six weeks from November 9 to December 30 and has, over the many years since it was first presented, become an annual tradition in New York at Christmas time.