LA JOLLA, CALIF. — The songwriters Robert Lopez and Kristen Anderson-Lopez are rushing to catch a performance. It’s just 10 days until the first preview of their new musical, “Up Here,” at La Jolla Playhouse, and the pressure is on.

This is, after all, their first major project on the heels of the blockbuster Disney film “Frozen,” for which they won an Academy Award for the ubiquitous anthem “Let It Go.” That Oscar sits on an unassuming shelf in the basement of their Brooklyn home, alongside their Emmys, Grammys, and Mr. Lopez’s Tony Awards for “Avenue Q” and “The Book of Mormon.”

Expectations may be high for their new musical, which starts preview performances Tuesday, but right now they’re scrambling to get to the summer camp recital of their daughter Annie, 6, to see her perform the Meghan Trainor song “Dear Future Husband.” Later that afternoon, their daughter Katie, 10, has a camp show of her own.

“Our kids come first, and we really put them at the top of our priority list,” Mr. Lopez said. Even if that means stepping away for a couple hours from the show they have nurtured for the last eight years.