Andreas Wiseman International EditorHanWay Films is launching international sales on multi-Grammy Award-nominee Sia’s feature directorial debut Music.The film stars Golden Globe-winner Kate Hudson (Almost Famous), Tony-winner Leslie Odom Jr.(Hamilton), and Sia-protégé Maddie Ziegler (West Side Story).Hudson plays Zu, a free spirit estranged from her family, who suddenly finds herself the sole guardian of her half-sister, Music (Ziegler, a teenager on the autism spectrum whose whole world order