The brewing musical version of “Big Fish” has hooked Broadway’s Neil Simon Theater for a fall opening, reeling in a cast that includes Bobby Steggert, Kate Baldwin and Krystal Joy Brown to join topliner Norbert Leo Butz.Show was already set for a Chicago tryout that starts in April, but exact Broadway plans had not yet been inked nor had a complete cast list been finalized. Steggert (“Ragtime”) is onboard as Will, a young man trying to uncover the true life story of his father Edward (Butz), an inveterate teller of tall tales. Baldwin (“Finian’s Rainbow”), playing Edward’s wife, and Brown (“Leap of Faith”), set to portray Will’s spouse, round out a cast that also includes Zachary Unger (as young Will), Ben Crawford and Brad Oscar. Tuner, based on the novel by Daniel Wallace as well as the Columbia Pictures movie, comes to the boards with a creative team that includes composer Andrew Lippa (“The Addams Family”), book writer John August (who penned the film) and helmer-choreographer Susan Stroman (“The Producers,” “The Scottsboro Boys”). “Big Fish” is produced by Dan Jinks and Bruce Cohen, two of the producers of the original film, as well as Stage Entertainment with Roy Furman, the Nederlander Org, John Domo and Broadway Across America. Lined up for a Windy City tryout that starts previews April 2 ahead of an April 19 opening at the Oriental Theater, “Big Fish” is lined up to kick off previews at the Neil Simon Sept. 5 prior to an Oct. 6 opening.