High School Musical alumnus Vanessa Hudgens stars in her stage debut of Gigi, a new Broadway musical based on the famous 1958 film. In this video, Hudgens and co. perform the song “The Night They Invented Champagne” on Good Morning America and debut the show’s bubbly, energetic ensemble pieces — as well as Hudgens’ surprisingly impressive pipes. For all the musical theater lovers out there, this one’s for you.