Lady Gaga sang a pretty unbelievable performance at the Academy Awards 2015 in a tribute to The Sound of Music.

Gaga, who's usually known for her bizarre performances on stage, took on a different approach on Oscar night. She sang classic hits from the classic musical-movie starring Julie Andrews, including "Edelweiss" and "Climb Every Mountain."

The singer donned a fancy white dress and let her hair flow as she belted out her soprano range in one of the most inspiring performances of the night.

After she was finished, the movie's star Julie Andrews walked on stage to present the next award.

See the rendition below.

Tags: Oscars 2015 Lady Gaga