The Best Christmas Lights

I have seen those little boxes that play Christmas music, where you plug in the strings of christmas lights, and the lights pulse to the music.

What are these boxes called, and where can I find them?

(The last time I saw one was at a K-mart, where they had one hooked up to a display tree. But it wasn’t for sale.)

And I am NOT looking for one of those places that sells software controllers for elaborate outdoor Christmas light shows. Just a simple box for a living room tree.

Thanks!

They are called "The Lights and Sounds of Christmas" and can be bought at most stores that sell Christmas stuff like Fry’s Marketplace, The Home Depot, Cosco etc…

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