Song: “Ljósið” by Olafur Arnalds. Video by Esteban Diacono.
I have heard a couple of people comment that someone needs to make a visualizer application of this effect, and I agree: it’s hypnotic, it’s beautiful and mesmerizing. I could watch it all day. But if this effect could be used for any song you had lying around in your catalog, it would render this song and its unique video unremarkable. And that would be a utter shame.