You will earn this through regular play in world B-4 when you successfully use the recorder to earn a piece.
Unlock the recorder in the world B central temple then go to B-4 and the first puzzle on the left is Wrap Around the Corner. Hit the recoder on the wall to your right then pick up the connector and wall over to the barrier, set the connector to the wall terminal and then place it on the ground out in the central area of the room. Wait a good 20 seconds then go stop the recording by clicking the terminal again. While your double is moving the copy of the connector, pick it up and connect it to the power terminal. When your double drops his connector, connect to it then place your connector to open the barrier.