This specific video has helped me buckle down and get shit done so many times. I've even made loops of songs I have copies of on my computer for this kind of thing. The repetition OH MY GOD it tickles my brain in just the right way so as to boost productivity. It's great how that can cancel out the ADHD when I have deadlines looming.
Video game music does the same thing. Death by Glamour gets me in the ZONE.
I listen to Sega Mega Drive playlists. Usually the relaxing ones. I've played them so much that the song progression is normal to me. I know which one will play next in the list. Sometimes a song gets stuck in my head and it impedes my thought process, so I put it on and don't have to think about it anymore. Usually the Sega songs, they are designed to be repeated.
Check this one out, just let it play until the end https://youtu.be/KrOayhOn-tw