"Show Yourself." "Into the Unknown." "Lost in the Woods." These are just some of the songs that steer the emotional narrative of "Frozen 2." ABC News' Ginger Zee sits down for an intimate, one-of-a-kind performance of these songs by the team that wrote them: Kristen Anderson-Lopez and Robert Lopez. In this episode, you'll get a deeper look into the songwriting process from raw idea to finished product.