Streep revealed the news during interviews for the film of Tracy Letts' "August: Osage County" with Extra TV. "I have a new song that [Stephen] Sondheim wrote for me," Streep said with a laugh, adding, "He gave me the manuscript of it and wrote, 'Don't f*ck it up!'"
Rob Marshall ("Chicago," Disney's "Pirates of the Caribbean: On Stranger Tides") directs the film, based on the Tony-winning original musical by James Lapine, who also penned the screenplay, and composer Sondheim, who provides music and lyrics. It will arrive in theatres Dec. 25, 2014.
The cast also includes Emily Blunt ("Looper," "The Young Victoria," "The Devil Wears Prada") as the Baker's Wife, James Corden (One Man, Two Guvnors) as the Baker, Anna Kendrick ("Pitch Perfect," "Up in the Air") as Cinderella, Chris Pine ("Star Trek Into Darkness," "Jack Ryan") as Cinderella's Prince, Johnny Depp ("Pirates of the Caribbean," "The Lone Ranger," "Sweeney Todd") as the Wolf, Daniel Huttlestone ("Les Misérables") as Jack, Lilla Crawford (Annie) as Little Red, Tracey Ullman as Jack’s Mother, Christine Baranski ("Mamma Mia!," "The Good Wife") as the Stepmother, MacKenzie Mauzy (Next to Normal) as Rapunzel and Billy Magnussen (Vanya and Sonia and Masha and Spike) as Rapunzel's Prince.
Rounding out the cast are Tammy Blanchard (How to Succeed…) and Lucy Punch ("Bad Teacher," "Dinner for Schmucks") as Cinderella's stepsisters, Florinda and Lucinda, respectively; Richard Glover ("Sightseers," "St. Trinian's") as the Steward; Frances de la Tour ("Hugo," "Alice In Wonderland") as the Giant; Simon Russell Beale ("The Deep Blue Sea") as the Baker's father; Joanna Riding ("My Fair Lady") as Cinderella's mother; and Annette Crosbie ("Calendar Girls," "The Slipper and the Rose") as Little Red Riding Hood's granny.
"Into the Woods," according to press notes, "is a modern twist on the beloved Brothers Grimm fairy tales, intertwining the plots of a few choice stories and exploring the consequences of the characters’ wishes and quests. This humorous and heartfelt musical follows the classic tales of Cinderella, Little Red Riding Hood, Jack and the Beanstalk, and Rapunzel—all tied together by an original story involving a baker and his wife, their wish to begin a family and their interaction with the witch who has put a curse on them."
The big-screen adaptation welcomes songs from the stage musical, including "Children Will Listen," "Giants in the Sky," "On the Steps of the Palace," "No One Is Alone" and "Agony," among others.
The production team includes Dion Beebe as director of photography, Dennis Gassner as production designer and Colleen Atwood as costume designer.
Into the Woods premiered on Broadway Nov. 5, 1987, at the Martin Beck Theatre. The production, which ran for 764 performances, won Tony Awards for Best Score, Best Book and Best Actress in a Musical.