Excellent work by Ryan letting you hear an approximation of what they are removing from MP3 files when doing “lossy” compression.
This is what the MP3 programmers deem unimportant in your music. You can play the video with it’s own lossy audio, or go here to hear the full version of what they pull from your music to make MP3 files.
Most of what is cut out is spatial — reverbs, room sound, delays, decays, fade outs, dynamics, lots of pre-delays, layering of sounds, attacks, breathes, etc..
This is the movement and the emotional content of the song. The interacting layers is the kind of data that computer programmers (and digital internet babies) can’t quite measure, so they disregard it.
That’s the scientific method at work for better or worse – if you can’t measure or control it, disregard it.
This is important listening and will help you to understand that hearing music is more than frequencies.
I would love to see someone do this type of experiment with a 24bit mix and a 16bit mix of the same music.