Why was Elsa born with magical powers? The answer is calling her and threatening her kingdom. Together with Anna, Kristoff, Olaf and Sven, she’ll set out on a dangerous but remarkable journey. In “Frozen,” Elsa feared her powers were too much for the world. In “Frozen 2,” she must hope they are enough. Kristen Anderson-Lopez and Robert Lopez, the songwriters behind the music in the two movies, joined BUILD.