Photo: George Burns/Harpo Studios

At just 9 years old, violin prodigy Brianna Kahane has an impressive list of admirers, including former President Bill Clinton. Brianna's talent may be big, but some say her heart is even bigger. She's performed across the country and helped raise nearly $18 million for charity.

Watch Brianna talk about her passion   

"My mom and dad raised me to help people and follow my dream," Brianna says. "My dream is to make the world a better place one song at a time ... I want to make the world a better place."

Brianna also says playing the violin soothes her soul. "Whenever I'm happy, I play it. Whenever I'm sad, I play it. I mean it's just my passion and my hobby," she says.