Pianos - S3.E19

Jodie and Sam are practicing playing the piano for a show they're suppose to do and Muffy is upset when she is not included. So she tries some of Waldo's magic spells on cheese and says the words backwards she is impressed when the cheese grow big. But when she tries another one, she freezes Sam and Jodie (like mannequins) and Jeff finds out. But they must work together to break the spell by playing a group of musical notes on the piano to unfreeze them.