Grady’s Women Chorus will be the featured choir with the Atlanta Symphony Orchestra in its Harry Potter Film Concert Series. The choir will perform composer John Williams’ score for Harry Potter and the Chamber of Secrets live with the ASO as the film plays on a 40-foot screen. Performances are Oct. 5-7 at Symphony Hall. The performance is part of a multi-year relationship between ASO and the choir in which the choir will be performing all of the Harry Potter movies in sequence over the next several years, according to choir director Kevin Hill.