Disney+ show is dropping an early holiday treat in the form of a 45-minute holiday special, cheekily called High School Musical: The Musical: The Holiday Special. Olivia Rodrigo, Joshua Bassett, Matt Cornett, Sofia Wylie, Larry Saperstein, Julia Lester, Dara Reneé, Frankie Rodriguez, Joe Serafini, Mark St. Cyr and Kate Reinders will all perform iconic holiday classics celebrating Christmas to Hanukkah to New Year's.