 Before Lee was brought on board, another screenwriter had made a first pass at a script, and Anderson-Lopez and Lopez tried to write songs for that script but none worked and all were cut. Then "the whole script imploded," which gave the songwriters the opportunity "to put a lot of [their] DNA" into the new script that Lee was writing. The production team "essentially started over and ... had 17 months," which resulted in a very "intense schedule" and implied "a lot of choices had to be made fast."
