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.”