Smash, Private Practice, Go On Stars Joining Carrie Underwood in NBC's Live Sound of Music

Audra-McDonald-Sound-of-MusicNBC’s live version of The Sound of Music — starring Carrie Underwood — is turning into quite the Tony affair.

The network announced today that TV and stage vets Audra McDonald (Private Practice), Laura Benanti (Go On) and Christian Borle (Smash) — Tony Award winners all of ’em! — have been added to the cast of the musical, which is slated to air Dec. 5.

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Five-time Tony-winner McDonald will portray Mother Abbess, Benanti has been cast as Elsa Schrader and Borle is set to play Max Dettweiler.

Six-time Grammy Award winner Underwood was previously announced as Maria, with True Blood’s Stephen Moyer as Capt. Georg Von Trapp.

According to the network, the three-hour Sound of Music telecast will be based on the original 1959 Broadway production, with music and lyrics by Richard Rodgers and Oscar Hammerstein, and a book by Howard Lindsay and Russel Crouse.

Excited by this casting news? Will the McDonald-Benanti-Borle trifecta make you more likely to tunr in? Sound off in the comments!