The detail that caught me off guard is a message on the mega tree: the word UP scrolls vertically across the tall tree between the 16:01 and 16:08 points of the show. Using the biggest prop in the yard as a moving sign is a fun touch, and in my view it shows how the whole property gets treated as one canvas rather than a set of separate props.
As for how it all comes together, the display is a programmed outdoor show on a single-story house, with lights and singing props synchronized to a multi-track musical sequence. Thousands of addressable RGB LED nodes and pixel ribbons do the work, and the show runs from a couple of Baldrick controllers. The maker mixes 3D printed props and brackets with Coro props from Build a Light Show, plus custom coroplast singing Christmas tree faces and singing lightbulbs, and received some help from the community along the way.
Plenty stands out to me: a mega tree of cool white LED strands topped with an illuminated star, purple LED strips outlining the roofline and vertical corners, windows filled with illuminated shapes and matrix grids including a central snowflake, and a Gilbert Engineering flake in the left window. A light-up cartoon tree with a face sits on the brick wall, an illuminated wreath hangs beside the entrance, cyan jumping arches line the bottom edge over smaller illuminated trees, and candy canes border the driveway. Four character voiceovers carry spoken dialogue, two friends lent their voices, and the singing props move their mouths in time with the music.
The soundtrack lists five songs, and this is the maker's third year running a Christmas show. They say they are really pleased with this year's setup, and they plan to run it again next year, though a year out after that is on the table.
Project by Lights at Dan and Ann's. Watch it on their YouTube channel: