Moyer will play Capt. Georg Von Trapp, a World War I hero and single dad to seven children. Carrie Underwood is playing Maria, a former nun, who he hires to care for his children. He also -- spoiler alert! -- falls in love with her.
The three-hour live TV movie will be based on the 1959 Broadway production, which won the Tony for Best Musical.Julie Andrews and Christopher Plummer starred in the Academy Award-winning film adaptation.
Moyer, famous for playing vampire Bill Compton on the HBO series, most recently starred in the Hollywood Bowl production of the musical Chicago.
What do you think of Moyer playing Von Trapp?