Here’s a simple and easy Halloween project. It is based off of a single ended transistor audio amplifier. The transistor amplifies the audio voltage to one that can light up an LED. The volume should be turned up all the way to get best performance. Since audio singles are hardly any strong. If you want the music to be quieter than what is playing it should use computer speakers with a volume control. I recommend for the cord that has the sound transferring to the project is a 3.5mm male to RCA connectors. This is because of the thickness of the wires. They have to use thick wires with RCA connectors. One RCA jack goes to capacitor of the circuit and the other to a computer speaker.I brought tiny parking LED lights
Circuit Simulator