Robyn is the world's greatest singer. Well, not yet maybe, but one day she intends to be. She takes piano lessons and practices her scales, pays attention in music class and watches what the divas are wearing on TV. The only problem is that Robyn hasn't sung very much. And that she doesn't know the words to many songs. So when she arranges to perform in front of the whole class, she gets in a little over her head. To make matters worse she...