EDIT: Forgot to mention that is the ACTUAL PK providing the voice-work (the NOM and the laugh). The music is the Malo Mart theme from Zelda: Twilight Princess.
The final guild leader button! HOORAH!
Click PK to make her laugh or hit the CAKE button to make a cake magically appear. What will PK do if you try to click the cake I wonder?
Also, there is another hidden button here. Have fun finding it for a small surprise!