Oscars 2015: Lady Gaga Sings "The Hills Are Alive," "My Favorite Things" for 'Sound of Music' Tribute (Video)

Oscars 2015: Watch Lady Gaga Perform a Tribute to 'The Sound of Music' (Video)

The musician performed the medley of four songs from the Julie Andrews-Christopher Plummer movie-musical at the Dolby Theatre.

Lady Gaga was part of special 50th anniversary tribute to The Sound of Music at the Oscars on Sunday night.

The musician took the Dolby Theatre stage in a white gown to perform a medley from the Julie Andrews-Christopher Plummer movie-musical.

Among white wooden beams and a string orchestra, Gaga hit the high notes on "The Hills Are Alive," "My Favorite Things," "Edelweiss" and "Climb Every Mountain."

Afterward, Andrews came onstage, hugged Gaga and, before presenting the Oscar for best score, told the audience, "It's hard to believe that 50 years have gone by since that joyous film was released. I blinked and suddenly here I am! I think that I do speak for everyone connected to the movie when I say, we all really felt blessed to be a part of it. And as for me, well, how lucky can a girl get?"

Lady Gaga was among the night's lineup of musical performances, which also included numbers by Anna Kendrick, Jack Black and Jennifer Hudson, as well as Tim McGraw, Rita Ora, Adam Levine, Common, John Legend, Tegan and Sara, and Lonely Island taking the stage to perform the nominated original songs.

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