Talking Toothbrush for Kids

  How to prevent tooth decay? Learn how to brush your teeth! How often have I tried to teach my kids how to brush their filthy little fangs, and do they do it? I despair! Will they let me brush their teeth? No! SCREAM! I want to buy a toothbrush that talks in a fun way, that teaches them... possibly by singing a little jingly tune... Front teeth top, front teeth bottom, back teeth right top... up down, up down, (not side-ways) the tune/instructions lasts for 2 minutes.
  The brush itself could glo in the dark, be shaped like Scooby- whatever! Just help my kids to get ALL their teeth brushed, especially at the gum line. If battery-powered, please include 4 inter-changeable heads! I can never find the right heads to buy for novelty brushes that cost a fortune but only last a few weeks before their brush gets all misshaped.