In response, Erivo revealed, “Oh, I was very ill by the end of it,” adding that she spent four days in bed with a high fever of 104 degrees, People reported. It was a demanding weekend for Erivo, as the night before her audition, she had also performed at Disney Hall.

Made during their appearances on The Tonight Show with Jimmy Fallon, the 44-second song is a light rundown of the Wicked basics, featuring a cameo from the Wizard himself (Jeff Goldblum). Look, it's not Defying Gravity or Popular but it's fun. The country star is the latest A-lister to share such a serious warning with fans.