Melissa Block talks with Jay Smooth, host of the radio show "Underground Railroad," about a new pop single by 9-year-old Willow Smith. Willow is the daughter of superstar parents Will and Jada Pinkett Smith. The song, "Whip My Hair," is an ode to self-empowerment. Is Willow too young to have entered into the pop machine? Or is she a talented little girl who happens to have the financial backing to make her musical dreams come true?