Music Controlled Christmas Lights Audio Controlled Christmas Lights?

Audio controlled Christmas lights? - music controlled christmas lights

I control my lights with Christmas music ... I am aware of what to do. But I try, the parts that I use. What are effective and easy to use circuits that I can use to produce? I built a few changes that I was looking for something that is more fragile and could run / light with a very low voltage (10 to 20 mV)