The video clips received wide distribution via social media in the weeks and months that followed. But extraneous foreground noise blocked some of the interesting background vocals that were also recorded. So in an effort to bring out more of the amazing qualities of this recording, I've trimmed out and filtered much of the noise in these clips, and annotated several interesting features in a video spectrogram.
As always, your listening experience will be best with headphones. But even without, these clips sound pretty good to the ear.