This is has the be the MOTHER of all christmas light displays. Check it out http://www.break.com/articles/houselights.html
Have to wonder if that music plays all night... or if it was just added for the video. Either way... it might be kind of hard to sleep near that house, lol.
Acutally, I think they synced it later for the video. I have been to houses where they play music for their displays, but its never extremely loud. Just loud enough to hear it if you drive on that side of the street with the windows down.
There's this one house in the Springs we go to see every year, on Dale St. east of downtown. Among the massive amount of lights, they have numerous home-built creations, including sledding characters, elves cleaning Santa's tractor, and an entire Santa's workshop. It also has music going and you see most of it driving down the alley next to the house. There's usually a line of cars to see it!