Motzand is located in Mad Monster Mansion, in the church. Motzand will be on the organ. To start the mini-game, you must climb the organ to meet Motzand. Then Motzand will press keys. Your goal is to copy Motzand's pressed keys. To do that you'll need to Beak Buster the keys. You can press them the moment he presses them. You must copy two songs to win the Jiggy.
If you press the wrong key you will take 1 point of damage. You can then press the correct key and continue the mini-game (without restarting).