I dont have anything for the other pics yet but
The original was from an ad campaign for the audio cassette brand Maxell. Here's an article about it.
Pertinent points:
Ride of the Valkyries by Wagner
Night on Bald Mountain by Modest Mussorgsky
Chair by Le Corbusier (Hongjoong is sitting in what appears to be a Wittmann Kubus chair)
JBL L100 speaker (looks like Hongjoong's got the Dali Fazon F5s)
What does it mean? What's the connection? I got nothing there. Honestly could just be Hongjoong and/or production team liking the visuals of the ad.











