The Christmas holiday is celebrated all around the world and lights form a major part of most Christmas decorations. Here are two masterclass examples from opposite ends of the globe, of synchronised light and music displays.
First up is a display at Perth, Western Australia that was posted on YouTube by TonyaI.
And next is "Symphony In Lights" at Denver, Colorado, presented by Carson Williams and Parker 3D, which they also posted on YouTube.
Both are great examples of a new, computer controlled, art form.