President Obama appeared at the Grammys on Sunday night, streaming in on a large screen to make a speech about the need to stop violence against women.

“Together we can change our culture for the better by ending violence against women and girls,” he told the crowd at the 57th Annual Grammy Awards. “Artists have a unique power to change minds and attitudes and get us thinking and talking about what matters, and all of us, in our lives, have the power to set an example. Join our campaign to stop this violence.”

The speech was part of the White House’s “It’s On Us” campaign. In his message, the President encouraged the artists at the Grammys and the viewers at home to pledge to end violence against women.  

After Obama concluded, a domestic violence survivor named Brooke Axtell took the stage to share her story.

“Authentic love does not de-value another human being,” she said. "Authentic love does not silence, shame, or abuse.”

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Katy Perry then performed an emotional rendition of her song “By The Grace of God.”

The songstress turned up on stage with her hair looking dark brown, though she showed off purple hair on the red carpet. During the show she wore a long white gown and stood at the microphone as she belted out the slow tune.