QUEEN We Will Rock You - Tooth Tunes (Have you ever thought to yourself, just how can I make cleaning my teeth that little bit more entertaining, a little musical? Well, someone else obviously did because here is the proof. From 2007, this children's tooth brush plays a two-minute song clip to encourage a child to brush their teeth for the dentist-recommended two minutes. Once activated, a small CPU in the handle plays the featured song, by transferring (good) vibrations through the bristles, which act as transducers, into the front teeth, through the jawbone, and into the inner ear. Sounds like the most joyful experience, batteries included, although this example remains factory sealed so we have not been able to test this one!)