Bart Simpson has been 10 years old for 22 years now, and Nancy Cartwright is the woman behind the voice that keeps him forever young. The voice over artist showed off her amazing vocal ability with RadarOnline.com.

In an exclusive interview Nancy says “Bart is the easiest one to do,” but her favorite voice is that of Nelson Muntz, the bully. “Of all the characters in Springfield, he’s one of the most evolved characters,” she says. “He’s now a bit of a philosopher.”

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