Have you ever had a song stuck in your head that you just can't shake?

Shimmy shimmy no sashay sings little worm as he wriggles along. He's got a song stuck in his head – he's got an ear worm! But where has it come from? It's not Owl's song. And it's not Chipmunk's song either. Will Little Worm ever discover where the catchy tune in his head came from?