THE SOUND OF MUSIC LIVE! — Rehearsal — Pictured: (l-r) Ariane Rinehart as Liesl, Peyton Ella as Gretl, Carrie Underwood as Maria, Michael Nigro as Friedrich, Sophia Ann-Caruso as Brigitta, Ella Watts-Gorman as Louisa — (Photo by: Paul Drinkwater/NBC)