What is this song called?

Ok, all i know is the music video to it. I will describe it as best as i can. Here goes. I was in Paris, France a couple years ago, and I was watching MTV. It is a White woman singer. The music video starts out when a Black girl is being put to bed by her mom, and her mom walks out, and shuts the door. Then the girl gets out of bed, and runs over to a screen, and puts on headphones. The song starts out with a lullabye type of tune made by one of those metalic crank macines (you know, that you put on wood, and the little metal prangs make different keys, as you turn the handle) and the video starts. Then at the end of the song, the girl hears her mom coming to her room, and she takes the headset off. She then rushes to her bed, as the song ends with the lullybye tune and the mom opens the door to see her child asleep.