Cynthia Erivo opened the Oscars with a breathtaking performance of The Wiz classic "Home," paying homage to Stephanie Mills and Diana Ross.

Until they came back together to sing the Wicked‘s part one closer, "Defying Gravity." While Ariana watched in amazement, seeing Erivo soar, nailing those final notes, as did the audience. The performance earned a standing ovation.

Grande first delivered a moonlit rendition of “Over the Rainbow,” which Judy Garland famously sang as Dorothy in the movie “The Wizard of Oz.” Erivo then belted her version of “Home” from the 1975 Broadway musical “The Wiz,” a Dorothy number originally performed by Stephanie Mills onstage and by Diana Ross in the 1978 film adaptation.