This was easily the most informative reaction to Feel My Rhythm that I've seen. They (especially Kevin) were the only ones who picked up on the fact that the song didn't just use a sample from Air on the G String. The bass lines were very similar (FMR's was simplified), the bridge was also taken from Bach's piece, etc.
The composers of Feel My Rhythm took many lines from Air on the G String and used those as the foundation for their song. There is way more Bach in there than people think. Feel My Rhythm was not just a sampling, but really more of a collab with Bach sunbaenim.
The reaction video was already on the long side (almost 22 minutes) but it seemed like they could've gone on for hours discussing the music.