sound of music von trapp children carrie underwood nbc NBC's 'Sound of Music Live!' casts von Trapp children: Ariane Rinehart and moreNBC’s upcoming live broadcast of “The Sound of Music,” starring Carrie Underwood as Maria and Stephen Moyer as Capt. von Trapp, has added several key players to its cast: namely, the kids who will play the von Trapp children.

Theater actress Ariane Rinehart, who was most recently seen in the video for Justin Timberlake’s “Mirrors,” will play 16-going-on-17 Liesl. She can also be seen next year in Darren Aronofsky’s biblical epic “Noah.”

Her siblings will be played by mostly unknown actors with theater backgrounds: Michael Nigro as Fredrich, Ella Watts-Gorman as Louisa, Joe West, who played Ralphie in Broadway’s “A Christmas Story” adaptation, as Kurt, Sophia Caruso, who played young Norma Jean on “Smash,” as Brigitta, Grace Rundhaug as Marta, and Peyton Ella as Gretl.

Newcomer Michael Campayno will play Liesl’s soldier love, Rolfe, reports Deadline.

The three-hour “The Sound of Music Live!” will air Thursday, Dec. 5 at 8 p.m. ET/PT.

Posted by:Jean Bentley