Lady Gaga's 2016 Oscar Performance Amazes Fans

The star singer's performance of "Til it Happens to You" was one of the most powerful moments at this year's Oscars.
3:16 | 02/29/16

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Transcript for Lady Gaga's 2016 Oscar Performance Amazes Fans
Shining a light on a very important issue and her performance bringing the crowd to its feet. ABC's kayna Whitworth is here with more. Good morning to you, kayna. Good morning to you and not only was the crowd brought to its feet but they also began to cry. As those survivors of sexual violence joined lady gaga on stage. Now, gaga saying she is a survivor and wanted to use her Oscar performance to send a powerful message. ? Till it happens to you won't know how I feel ? Reporter: Lady gaga transcending the Oscar stage. ? Till it happens to you don't know how I feel ? Reporter: Accompanied by dozens of survivors of sexual violence, the scars written on their arms. ? You won't know how I feel ? Reporter: The song "Til it happens to you" earning gaga her at the first Oscar Namm nation, best original song for the documentary "The hunting ground" which chronicles alleged sexual violence on college campuses. Students went from sexual assault victims to survivors and now activists. Reporter: Vice president Joe Biden there to promote the white house campaign it's on us introducing gaga. Take the pledge, a pledge that says I will intervene in situations when consent has not or cannot be given. Let's change the culture. Reporter: Lara speaking with his wife Jill and daughter Ashley backstage. I think it's really going to be a powerful message. One in five women are assaulted on campus and only 13% actually report it which needs to change. ? You don't know it won't be real ? Reporter: Social media blowing up with the #itsonus and #iwillintervene. Kesha tweeting thank you, it hit very close to my heart for obvious reasons. I am myself a survivor. Very grateful to the academy for giving us this world stage. Wow. Now, lady gaga sending out a tweet overnight. It was very powerful thanking all of those women and men for joining her on stage saying 50 stories, such resilience. She also thanked everyone for allowing them to hear her story about her survivor -- important to note you heard the vice president say that he really wanted everybody to get online and sign their petition for their cause. Absolutely. It was a moment. I agree. I would say it was the moment of

This transcript has been automatically generated and may not be 100% accurate.

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