As stated by RN PRN - I checked him out on www.snopes.com - my source for all things fantastical.
They've got song title there and everything. Including a link to one of his other displays. He's an electrical engineer, and on his own webpage lists the instructions for setting up such a display.
Also, to reduce the noise pollution, the music is transmitted via low power FM signal so you can pick it up on your car stereo as you drive by.
tlm.