Disney’s Frozen took second prize in the Christmas-week box office sweepstakes with a double dose of animated princesses. Sisters Anna and Elsa are played by Kristen Bell and Idina Menzel, both of whom are no strangers to voiceovers. While the professional recording studio setup looks far from magical, the chemistry between their characters translates on the big screen. The cast also includes Jonathan Groff, who—based on this behind-the-scenes footage—seems to nail every line on the first try as Kristoff the rugged mountain man, and Josh Gad as a lovable and hilarious snowman with a naive love for summer.