Esteban Diacono created this video to the music of Olafur Arnalds' Ljósið using "Adobe After Effects, particular v2, soundkeys and a little starglow". 
i first imported the audio and set up 2 sounkeys layers, one for the piano and one for the strings. Then i worked the particles and the particle subsystem and linked things like the emission, the turbulence, the velocity, the spin amplitude and the strenght of the fields to the soundkeys outputs. Then i set up the colors with 2 different palettes, and well, after that there was a lot of trial and error in order to achieve what i was looking for. There's a lot of randomness involved in here, so there was also a lot of luck, of course.
The most amazing, beautiful and realistic piece of computer art I have ever seen [thenextweb]