VIDEO: CINDERELLA's Laura Osnes & Santino Fontana Sing 'Sound of Music's 'Do-Re-Mi'

Broadway's CINDERELLA stars Laura Osnes and Santino Fontana got in on THE SOUND OF MUSIC fun recently, singing the iconic tune "Do-Re-Mi" from the iconic Rodgers and Hammerstein musical classic. Check out their upbeat rendition below!

NBC is set to air a live broadcast of "The Sound of Music," based on the classic stage musical. The three-hour live production, starring six-time Grammy Award winner Carrie Underwood as Maria von Trapp, will air Dec. 5.

Executive producers for the telecast are Neil Meron and Craig Zadan ("Smash," "The Academy Awards"). Directors are Rob Ashford ("Evita") and Beth McCarthy-Miller ("30 Rock"). David Chase ("Cinderella") serves as musical director.The soundtrack is licensed through the NBCUniversal Television Consumer Products Group.

"The Sound of Music," set in the 1930's before and during "Anschluss" when the Nazi's annexed Austria, is based on the romantic true story of Maria von Trapp, an aspiring nun who leaves the abbey to become a governess for the widower Capt. von Trapp's seven children. She soon finds herself falling in love with her employer and questioning her religious calling. It premiered on Broadway in 1959 where it broke box-office records and won the Tony Award for best musical. The 1965 film adaptation won the Oscar for best picture.