Idina Menzel's Elsa sings "Into the Unknown" in the latest sneak peek at "Frozen 2," which hits theaters November 22. The movie also features new songs with Kristen Bell, Josh Gad, Jonathan Groff and Evan Rachel Wood. The soundtrack, out November 15, will also include songs from Panic! at the Disco, Kacey Musgraves and Weezer.