With NBC’s “The Sound of Music” set to go live Thursday night, the cast held it’s first full dress rehearsal Tuesday night and Variety has the exclusive photos.

Production stars Carrie Underwood as Maria and Stephen Moyer as Capt. Georg Von Trapp. Tony Award winners and stage veterans Audra McDonald, Laura Benanti and Christian Borle also star.

The live holiday spectacular is based on the original 1959 Broadway production of “The Sound of Music,” starring Mary Martin and Theodore Bikel, with a book by Howard Lindsay and Russel Crouse. The iconic story centers on a young woman who leaves an Austrian convent to become a governess to the seven children of a naval officer widower. “The Sound of Music Live!” is exec produced by Neil Meron and Craig Zadan. Beth McCarthy-Miller and Rob Ashford serve as co-directors. “The Sound of Music Live!” is produced by Universal Television.

The three-hour live event airs Thursday night at 8:00 PM ET on NBC.