At the 2015 Academy Awards, Lady Gaga performed a gorgeous medley of songs from The Sound of Music to mark the 50th anniversary of the classic movie. In return, the cast of a brand new production of The Sound of Music paid their respects by putting together a lively performance of many of Gaga's biggest hits.

Watch below and share your thoughts in the comments!

Gaga will be returning to the Oscars stage this Sunday to perform her anthem "Til It Happens to You."