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.”

Cynthia Erivo helped kick off the Oscars by paying homage to The Wiz, singing Stephanie Mills’ 1974 hit “Home.” Wearing a stunning white dress with purple accents,