The latest TV spot for Disney's Frozen features the new song from pop star Demi Lovato entitled "Let It Go," which will be featured on the soundtrack. Kristen Bell lends her voice to Anna, who goes on a journey with Kristoff (Jonathan Groff) and the talking snowman Olaf (Josh Gad) to get her sister (Idina Menzel) to stop a perpetual Ice Age that has fallen over the kingdom. Chris Buck and Jennifer Lee direct this upcoming animated adventure, which arrives in theaters November 27.