R&B singer-songwriter H.E.R. on finding purpose and seeing her vision come to life

R&B sensation H.E.R. is nominated for five Grammys this year. Her stage name stands for "having everything revealed." With over 1.6 billion streams worldwide, her music resonates. Ahead of Sunday's Grammy Awards, Gayle King spoke with the 21-year-old California native in Brooklyn, New York, where she gave us a taste of her nominated song, "Best Part."