Ah, programming Christmas lights to music can indeed add a festive touch to any holiday display! To begin, you'll need a few supplies. First, you'll need a microcontroller like the Arduino or Raspberry Pi, along with some LEDs and a speaker. Next, you'll need to install a software program called "Light-O-Rama" or "Lightify" onto your computer. Finally, you'll need to use the software program to program the lights and speaker to respond to music in a sequence. With some patience and practice, you'll have a beautiful Christmas light show in no time!