A rare behind-the-scenes look at the making of Frozen 2. For the first time, the Oscar-winning filmmakers of Walt Disney Animation Studios are pulling back the curtain, revealing the creative process that brought the next chapter in the Frozen saga to life! And step "Into the Unknown" with songwriters Kristen Anderson-Lopez and Robert Lopez for a sneak peek at Frozen 2's all-new soundtrack. Hosted by Ginger Zee of ABC News. A production of ABC Audio in collaboration with Walt Disney Animation Studios.

"Inside Frozen 2" is produced by ABC Audio, makers of "The Dropout," the award-winning daily ABC News podcast "Start Here," and more: http://www.abcaudio.com/podcasts

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From the first note, to the last lyric, what does it take to craft a new musical journey for "Frozen 2?" Oscar-winning songwriters Kristen Anderson-Lopez and Robert Lopez, the husband and wife team who created the music for "Frozen" and "Frozen 2," talk with ABC's Ginger Zee about composing the film's new soundtrack.

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** Note: This episode contains "Frozen 2" spoilers.

"Frozen" became the top-grossing animated feature of all time after its 2013 release, so creating a sequel to the beloved film about two royal sisters' unbreakable bond wasn't something "Frozen 2" writer/director Jennifer Lee took on lightly. Lee talks with ABC News' Ginger Zee about the challenges of crafting a new adventure for Anna, Elsa, Olaf, Kristoff and Sven, and being a creative leader at Walt Disney Animation Studios.

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