The 'Wicked' co-stars, who play Elphaba and Glinda, respectively, paid homage to the 'Wizard of Oz' with their opening medley.

The musical opener kicked off with "Over the Rainbow" before segueing to "Home" from "The Wiz," as well as "Defying Gravity."

Oscars opened on a high note (literally), with a medley of songs from Wizard of Oz-based films performed by the stars of Wicked, Ariana Grande and Cynthia Erivo, at the Dolby Theatre in Los Angeles on Sunday (March 2) night.