Disney Baby - Mickey Mouse, Toy Story, Frozen, and More! If You're Happy and You Know It Sound Book - PI KidsSing, clap, wave, splash, and play with Mickey, Minnie, and other beloved Disney characters! Turn the attached picture wheel to hear six verses of "If You're Happy and You Know It" and watch favorite friends turn up to greet you. Fun, open ended questions about the pictures and characters add extra opportunities to enjoy music and movement with your baby. This Sound Book is special because: Sharing books with your baby builds social emotional bonds