The ‘Wicked’ witches kicked off the ceremony with a nod to ‘The Wizard of Oz’ and ‘The Wiz,’ singing “Somewhere Over the Rainbow” and “Home” before ending with an electric performance of their Wicked barnburner “Defying Gravity.

At the Dolby Theatre in Hollywood on Sunday, the two Oscar-nominated stars treated audiences to a musical history of Oz onstage and onscreen. Grande first delivered a moonlit rendition of “Somewhere Over the Rainbow,” which Judy Garland famously sang as Dorothy in the movie “The Wizard of Oz.”

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

The duo who star in the hit musical based on the Broadway play sang from 'The Wizard Of Oz', 'The Wiz' and 'Wicked'.

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.

The awards show began with a medley of songs inspired by the Best Picture-nominated film and adaptations of 'The Wizard of Oz.'

Ariana Grande and Cynthia Erivo brought Oz to the Oscars, kicking off the 97th annual ceremony with a musical medley from “The Wizard of Oz,” “The Wiz” and “Wicked.” After a tribute to Los Angeles, which is recovering from devastating wildfires,