Don't go to extremes, but make sure people know about you. Remember me. Building an amplifier is not recommended. Just something to keep in mind when looking for a relay that could save you time and money. Not Helpful 4 Helpful You've probably seen videos of Christmas lights that are synchronized to music.
Once you have a control system and some software, you can hang up your Christmas lights and use the software to program them with your song of choice.
How to Make Christmas Lights Flash to the Music
AlexanderD10 5 years ago on Introduction. Flag as Some would recommend that you start and stop the same time each night or each day s of the week. Please see the warnings section at the bottom of this page.