At 1:30 AM on January 6th, 2016, seismometers on the Korean peninsula recorded a seismic event, and North Korea claimed was a Nuclear detonation. I ran the seismic data through my custom software to generate time lapse audio.
I also ran the same data through another program that displays the seismic event as MIDI music.
The first note happens at 56 seconds from the beginning, and the music lasts 10 minutes.
The music does not use time lapse. It is meant to convey a sense of “this is how long the shaking lasted and how the ground shaking changed from moment to moment.” The music is kind-of like an instantaneous version version of the Richter scale.
The first note is the shortest note, which means it is also the most energetic. This is what I would expect from an artificial detonation.