Katelyn Jackson is been through more than most kids her age. By the time she was 3-years-old, she'd had 6 heart surgeries. The precocious 10-year-old plans to be a heart surgeon when she grows up, because she knows a thing or two about stuff like that. In the meantime, she's giving back by sharing advice, gifts, and, most recently, her heart beat. Katelyn actually recorded her heart beat with help from her team at the St. Louis Children's and Washington University Heart Center, and shared it with local singer/songwriter Erin Bode. The result is a song called "The Space Between," which uses Katelyn's heart beat as the rhythm, and highlights Katelyn's journey.