Olivia Wise, a teen with brain cancer, recently visited a studio for the first time to record her own version of the upbeat anthem -- even though she wasn't feeling so great herself. With just a piano in the background, Olivia slowed the song down into a delicate, yet powerful ballad.
Watch Olivia's beautiful recording in the video above.
Here is some background from the YouTube description:
She couldn't walk or stand, she didn't have her full breath or the energy she used to, and she was managing her new pains and new limitations. While her physical condition was rapidly fading, her spirit remained untouched.
Olivia is a fighter and has gone through the fire, in fact, she was going through the fire while she recorded this song, but you wouldn't know it, because she was dancing right through it. She is an inspiration, a champion, and my hero. This is her Roar.