>Cue somber piano music
Sounds like it's all in the same key.
Good ear.
https://en.wikipedia.org/wiki/Say_Something_(A_Great_Big_World_song)
"The song is written in the key of D major."
Another D major song.
https://www.songkeyfinder.com/songs-in-key/d-major
https://thefreedomarticles.com/mind-control-technology-current-state/
In another video, Truthstream Media expose the patents of a certain Hendricus G. Loos. One of his patents (US Patent 6,506,148 B2 from 2003) is entitled Nervous System Manipulation by Electromagnetic Fields from Monitors.
It details how your emotional state can be changed by modifying (pulsing) the EM (electromagnetic) fields around you – which electronic devices like TV screens and computer monitors already do. Loos writes:
“It is therefore possible to manipulate the nervous system of a subject by pulling images displayed on a nearby computer monitor or TV set.”
this can all be done subliminally without you consciously noticing it.