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Step 1:

"Dancing" was the first word that jumps to my mind when I start brainstorming. Therefore, I started with a simple LED circuit. 

Step 2:

Since users need to press the pig face to make it sing, I thought I could use the force sensitive resistor  (FSR) to control my LED and later attach the FSR to the pig. Users will activate singing and dancing at the same time by one simple press.  Therefore, I followed the FSR tutorial and updated my circuit. 

Step 3:

Though I cannot change much about how loud the music will play (since that is a part of the original design), I thought it would be nice at least the users can control the dance moves. This time, I added a potentiometer to my circuit to control the LED brightness. 

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