After Erivo notes that she had previously only sung Glinda's second act number, "Thank Goodness," for a public audience before her Elphaba audition, Menzel jumps in to exclaim, "That's my favorite song. Don't tell anyone!"

But what about the stars of the original Broadway musical, Idina Menzel and Kristin Chenoweth, who originated the roles of Elphaba and Glinda, and can fans of the original musical expect to see the famous original performers in the theatrical motion picture?

Broadway legends Idina Menzel and Kristin Chenoweth posed alongside the two stars at the film's premiere in L.A.