Lady Gaga performed “Til It Happens to You,” her Oscar-nominated song from the campus sexual assault documentary The Hunting Ground, at tonight’s Academy Awards ceremony. Towards the end of the song, she was joined onstage by a group of survivors. She was introduced by Vice President Joe Biden, who delivered a speech about preventing sexual assault and combating rape culture. Watch Gaga’s performance below.

Before her performance, Lady Gaga tweeted a message of support to Kesha:

.@kesharose I'll be thinking of u 2nite. This is not over we'll stand by u until you are free to live a HAPPY life. Everyone deserves that.

— Lady Gaga (@ladygaga) February 28, 2016

thank u @ladygaga and VP @JoeBiden for bringing attention to sexual assault at the oscars. it hit very close to my heart for obvious reasons

— kesha (@KeshaRose) February 29, 2016