16-year-old and Toronto native Olivia Wise performed a breathtaking rendition of Katy Perry’s Roar. The teen who was seated in a wheel chair while recording the song is currently fighting brain cancer and racked up an amazing 15,000 hits this month. Katy Perry recently saw the video and commented in her very own video message saying, “It was very moving and it sounded great. I love you, a lot of people love you, and that’s why your video got to me, and it moved everybody that saw it. Thank you so much. Keep roaring.” The prodction was Wise’s cousin Jeff’s idea saying “It was really just for an experience for her to have, and her family.” Check out the amazing video.