>> dolly is doing all kinds of music. you've been doing rapping. >> oh, yeah, i talk about the movie and talk about the queen who came from the rap world. >> she's a battle rapper too. she's breaking me down. >> i get her good. >> you'll be hearing a whole lot from the ladies. key key palmer, and the choir in this movie. ♪ >> don't miss "joyful noise" when it hits theaters on january 13. >>> still to come, the joy of losing weight. how celebrities are staying slim this holiday season. we dissect the star's secrets. >>> steven tyler on drugs, divorce, and his promiscuous past. what he told oprah. >> that is strayight ahead.